Imaging lens and imaging apparatus

ABSTRACT

An imaging lens consists of, in order from the object side, a negative first lens, a positive second lens, a positive third lens, a negative fourth lens, a positive fifth lens, a positive sixth lens, and a negative seventh lens. When f12 is the combined focal length of the first lens and the second lens, f is the focal length of the entire system, νd7 and νd3 are respectively the Abbe&#39;s numbers of the materials of the seventh lens and the third lens with respect to the d line, the following conditional formulae are satisfied:
 
 f 12/ f &lt;−3.2  (1)
 
νd7&lt;55  (2)
 
40&lt;νd3  (3).

CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims priority under 35 U.S.C. §119 to JapanesePatent Application No. 2014-191420, filed on Sep. 19, 2014. The aboveapplication is hereby expressly incorporated by reference, in itsentirety, into the present application.

BACKGROUND

The present disclosure relates to an imaging lens and an imagingapparatus, and more particularly to an imaging lens suitable for use ina vehicle mounted camera for photographing images in the front, side,back, and the like of vehicles in particular, a portable terminalcamera, and a surveillance camera that utilize image sensors such asCCD's (Charge Coupled Device), CMOS's (Complementary Metal OxideSemiconductor), and the like as well as to an imaging apparatus equippedwith this imaging lens.

In recent years, the miniaturization and the increased numbers of pixelsof image sensors such as CCD's, CMOS's, and the like have been achieved.Accompanying these developments, as the bodies of imaging devicesequipped with these image sensors also have achieved miniaturization,there is demand for imaging lenses to be mounted therein to beminiaturized and reduced in weight in addition to having favorableoptical performance.

Meanwhile, there is demand for lenses used in a vehicle mounted camera,a portable terminal camera, a surveillance camera, and the like to havehigh weather resistance, to be usable in a wide temperature range fromambient temperatures in cold climates to temperatures in the interior ofvehicles in summer in the tropics, to be compact, and to have highperformance. In particular, there is demand for cameras, which aredisposed in the interior of vehicles to surveil the front thereof, tohave small F numbers and be usable in a wide wavelength range from avisible range to an infrared range so as to be used even in the night.Further, there is also demand for lens portions which are exposed to theexterior of vehicles to be small when lenses are used in vehiclesmounted cameras, from the standpoint of the appearance of vehicles.

Patent Document 1 (Japanese Unexamined Patent Publication No.2010-091697) below proposes an imaging lens of a six lens configuration,in which a negative lens, a positive lens, a positive lens, a negativelens, a positive lens, and a positive lens are disposed in order fromthe object side, as imaging lenses to be mounted on vehicle mountedcameras.

SUMMARY

Requirements for imaging lenses to be mounted on vehicle mounted camera,surveillance cameras, and the like are becoming rigorous year to year,and the imaging lens disclosed in Patent Document 1 is, therefore,desired to have a smaller F number and achieve higher performance.

The present disclosure has been developed in view of the foregoingcircumstances. The present disclosure provides an imaging lens having asmall F number and capable of achieving high performance as well as animaging apparatus equipped with this imaging lens.

A first imaging lens of the present disclosure essentially consistingof, in order from the object side, a first lens having a negative power,a second lens having a positive power, a third lens having a positivepower, a fourth lens having a negative power, a fifth lens having apositive power, a sixth lens having a positive power, and a seventh lenshaving a negative power, wherein

The following conditional formulae are satisfied:f12/f<−3.2  (1)νd7<55  (2)40<νd3  (3)where,f12 is the combined focal length of the first lens and the second lens,f is the focal length of the entire system,νd7 is the Abbe's number of the material for the seventh lens withrespect to the d line, andνd3 is the Abbe's number of the material for the third lens with respectto the d line.

A second imaging lens of the present disclosure essentially consistingof, in order from the object side, a first lens having a negative power,a second lens having a positive power, a third lens having a positivepower, a fourth lens having a negative power, a fifth lens having apositive power, a sixth lens having a positive power, and a seventh lenshaving a negative power, wherein

the following conditional formulae are satisfied:f12/f<−3.2  (1)D4/f<0.39  (4)where,f12 is the combined focal length of the first lens and the second lens,f is the focal length of the entire system, andD4 is the air space between the second lens and the third lens.

A third imaging lens of the present disclosure essentially consistingof, in order from the object side, a first lens having a negative power,a second lens having a positive power, a third lens having a positivepower, a fourth lens having a negative power, a fifth lens having apositive power, a sixth lens having a positive power, and a seventh lenshaving a negative power, wherein

the following conditional formulae are satisfied:νd7<55  (2)−0.93<(R3+R4)/(R3−R4)  (5)where,νd7 is the Abbe's number of the material for the seventh lens withrespect to the d line,R3 is the radius of curvature of the object-side surface of the secondlens, andR4 is the radius of curvature of the image-side surface of the secondlens.

Note that the above expression “essentially consisting of” means thatthe imaging lens of the present disclosure may also include lenses thatpractically have no power, optical elements other than lenses such as astop and a cover glass, and mechanical components such as lens flanges,a lens barrel, a camera shake correcting mechanism, etc., in addition tothe lenses listed as constituent elements.

Further, in the present disclosure, surface shapes of lenses, such as aconvex surface, a concave surface, a planar surface, biconcave,meniscus, biconvex, plano-convex, plano-concave, and the like; and signsof the refractive powers of lenses, such as positive and negative,should be considered in a paraxial region if aspheric surfaces areincluded therein, unless otherwise noted. Moreover, in the presentdisclosure, the sign of the radius of curvature is positive in the casethat a surface shape is convex on the object side, and negative in thecase that the surface shape is convex on the image side. The expression“the center of the lens surface has a positive power” intends to meanthat a value of a paraxial radius of curvature is such that the lenssurface forms a convex surface. Further, the expression “the center ofthe lens surface has a negative power” intends to mean that a value of aparaxial radius of curvature is such that the lens surface forms aconcave surface.

In the first through third imaging lenses of the present disclosuredescribed above, it is preferable for the following conditional formulae(8), and (13) through (23) to be satisfied. Note that preferably, theimaging lens may have a configuration in which any one of the followingconditional formulae (8), and (13) through (23) is satisfied, or mayhave a configuration in which an arbitrary combination of two or more ofthe conditional formulae are satisfied.−5.0<(R14+R15)/(R14−R15)<−0.01  (8)25<νd5  (13)0.5<f3/f<10  (14)0.5<f2/f<7  (15)f1/f<−0.25  (16)0.3<f123/f<15  (17)0.5<f234/f<18  (18)0.5<f12345/f<10  (19)0.4<f2345/f<10  (20)0.1<f3456/f<5.0  (21)−4.0<(R8+R9)/(R8−R9)<4.0  (22)−3<f/f45<3  (23)where,f is the focal length of the entire system,f1 is the focal length of the first lens,f2 is the focal length of the second lens,f3 is the focal length of the third lens,f45 is the combined focal length of the fourth lens and the fifth lens,f123 is the combined focal length of the first lens, the second lens,and the third lens,f234 is the combined focal length of the second lens, the third lens,and the fourth lens,f345 is the combined focal length of the third lens, the fourth lens,and the fifth lens,f2345 is the combined focal length of the second lens, the third lens,the fourth lens, and the fifth lens,f3456 is the combined focal length of the third lens, the fourth lens,the fifth lens, and the sixth lens,f12345 is the combined focal length of the first lens, the second lens,the third lens, the fourth lens, and the fifth lens,νd5 is the Abbe's number of the material for the fifth lens with respectto the d line,R8 is the radius of curvature of the object-side surface of the fourthlens,R9 is the radius of curvature of the image-side surface of the fourthlens,R14 is the radius of curvature of the object-side surface of the seventhlens, andR15 is the radius of curvature of the image-side surface of the seventhlens.

An imaging apparatus of the present disclosure is equipped with at leastone of the first through third imaging lenses of the present disclosuredescribed above.

According to the first imaging lens of the present disclosure, a powerarrangement, and the like in the entire system are suitably set in thelens system constituted by seven lenses, and conditional formulae (1)through (3) are satisfied. This realizes a compact imaging lens having asmall F value and capable of obtaining favorable optical performance.

Accordingly to the second imaging lens of the present disclosure, apower arrangement, and the like in the entire system are suitably set inthe lens system constituted by seven lenses, and conditional formulae(1) and (4) are satisfied. This realizes a compact imaging lens having asmall F value and capable of obtaining favorable optical performance.

Accordingly to the third imaging lens of the present disclosure, a powerarrangement, and the like in the entire system are suitably set in thelens system constituted by seven lenses, and conditional formulae (2)and (5) are satisfied. This realizes a compact imaging lens having asmall F value and capable of obtaining favorable optical performance.

According to the imaging apparatus of the present disclosure, theimaging apparatus is provided with the imaging lens of the presentdisclosure. This enables the imaging apparatus to be configured in asmall size, to perform photography even under low illuminanceconditions, and to obtain favorable images having high resolution withvarious aberrations corrected.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a view illustrating a lens configuration and optical paths ofan imaging lens according to one embodiment of the present disclosure.

FIG. 2 is a view for explaining a surface shape and the like of thesecond lens.

FIG. 3 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 1 of the present disclosure.

FIG. 4 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 2 of the present disclosure.

FIG. 5 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 3 of the present disclosure.

FIG. 6 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 4 of the present disclosure.

FIG. 7 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 5 of the present disclosure.

FIG. 8 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 6 of the present disclosure.

FIG. 9 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 7 of the present disclosure.

FIG. 10 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 8 of the present disclosure.

FIG. 11 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 9 of the present disclosure.

FIG. 12 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 10 of the present disclosure.

FIG. 13 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 11 of the present disclosure.

FIG. 14 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 12 of the present disclosure.

FIG. 15 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 13 of the present disclosure.

FIG. 16 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 14 of the present disclosure.

FIG. 17 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 15 of the present disclosure.

FIG. 18 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 16 of the present disclosure.

FIG. 19 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 17 of the present disclosure.

FIG. 20 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 18 of the present disclosure.

FIG. 21 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 19 of the present disclosure.

FIG. 22 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 20 of the present disclosure.

FIG. 23 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 21 of the present disclosure.

FIG. 24 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 22 of the present disclosure.

FIG. 25 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 23 of the present disclosure.

FIG. 26 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 24 of the present disclosure.

FIG. 27 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 25 of the present disclosure.

FIG. 28 is a cross-sectional view illustrating the lens configuration ofan imaging lens of Example 26 of the present disclosure.

FIG. 29 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 1 of the present disclosure.

FIG. 30 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 2 of the present disclosure.

FIG. 31 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 3 of the present disclosure.

FIG. 32 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 4 of the present disclosure.

FIG. 33 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 5 of the present disclosure.

FIG. 34 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 6 of the present disclosure.

FIG. 35 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 7 of the present disclosure.

FIG. 36 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 8 of the present disclosure.

FIG. 37 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 9 of the present disclosure.

FIG. 38 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 10 of the present disclosure.

FIG. 39 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 11 of the present disclosure.

FIG. 40 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 12 of the present disclosure.

FIG. 41 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 13 of the present disclosure.

FIG. 42 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 14 of the present disclosure.

FIG. 43 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 15 of the present disclosure.

FIG. 44 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 16 of the present disclosure.

FIG. 45 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 17 of the present disclosure.

FIG. 46 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 18 of the present disclosure.

FIG. 47 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 19 of the present disclosure.

FIG. 48 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 20 of the present disclosure.

FIG. 49 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 21 of the present disclosure.

FIG. 50 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 22 of the present disclosure.

FIG. 51 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 23 of the present disclosure.

FIG. 52 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 24 of the present disclosure.

FIG. 53 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 25 of the present disclosure.

FIG. 54 illustrates aberrations diagrams of spherical aberration,astigmatism, distortion, and longitudinal chromatic aberration of theimaging lens in Example 26 of the present disclosure.

FIG. 55 is a view for explaining an arrangement of a vehicle mountedimaging apparatus according to the embodiment of the present disclosure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Hereinafter, embodiments of the present disclosure will be described indetail with reference to the accompanying drawings.

[Embodiments of Imaging Lens]

First, the imaging lens according to the embodiment of the presentdisclosure will be described referring to FIG. 1. FIG. 1 is a viewillustrating a lens configuration and optical paths of the imaging lensaccording to the embodiment of the present disclosure. Note that theimaging lens 1 illustrated in FIG. 1 corresponds to an imaging lensaccording to Example 1 of the present disclosure to be described below.

In FIG. 1, the left side of the figure is the object side, and the rightside thereof is the image side. In addition, FIG. 1 also illustratesaxial rays 2 from an object point at an infinite distance and off-axisrays 3, 4 at a full angle of view 2ω. Further, FIG. 1 illustrates animage sensor 5 disposed on the image surface Sim which includes an imagepoint Pim of the imaging lens 1, taking the case of applying the imaginglens 1 to an imaging apparatus into consideration. The image sensor 5converts an optical image formed by the imaging lens 1 into an electricsignal. A CCD image sensor, a CMOS image sensor, or the like may beemployed as the image sensor, for example.

When the imaging lens 1 is applied to the imaging apparatus, it ispreferable for a cover glass, a low-pass filter, an infrared cut filter,or the like to be provided according to the configurations of a cameraon which the lens is mounted. FIG. 1 illustrates an example in which aplane parallel optical member PP that presumes such components isprovided between the most-image-side lens and the image sensor 5 (theimage surface Sim).

First, the configuration of the first embodiment of the presentdisclosure will be described. The imaging lens according to the firstembodiment of the present disclosure includes, in order from the objectside, a first lens L1 having a negative power, a second lens L2 having apositive power, a third lens L3 having a positive power, a fourth lensL4 having a negative power, a fifth lens L5 having a positive power, anda sixth lens having a positive power. In the example illustrated in FIG.1, an aperture stop St is disposed between the third lens L3 and thefourth lens L4. Note that the aperture stop St illustrated in FIG. 1does not necessarily represent the size or shape thereof, but representsthe position thereof on the optical axis Z.

Further, the imaging lens of the first embodiment is configured tosatisfy the following conditional formulae (1) through (3):f12/f<−3.2  (1)νd7<55  (2)40<νd3  (3)where,f12 is the combined focal length of the first lens L1 and the secondlens L2,f is the focal length of the entire system,νd7 is the Abbe's number of the material for the seventh lens L7 withrespect to the d line, andνd3 is the Abbe's number of the material for the third lens L3 withrespect to the d line.

Next, the configuration of the second embodiment of the presentdisclosure will be described. The imaging lens according to the secondembodiment of the present disclosure consists of, in order from theobject side, a first lens L1 having a negative power, a second lens L2having a positive power, a third lens L3 having a positive power, afourth lens L4 having a negative power, a fifth lens L5 having apositive power, a sixth lens L6 having a positive power, and a seventhlens L7 having a negative power, the same as the imaging lens accordingto the first embodiment does. In the example illustrated in FIG. 1, anaperture stop St is disposed between the third lens L3 and the fourthlens L4.

Further, the imaging lens of the second embodiment is configured tosatisfy the following formulae (1) and (4):f12/f<−3.2  (1)D4/f<0.39  (4)where,f12 is the combined focal length of the first lens L1 and the secondlens L2,f is the focal length of the entire system, andD4 is the air space between the second lens L2 and the third lens L3.

Next, the configuration of the third embodiment of the presentdisclosure will be described. The imaging lens according to the thirdembodiment of the present disclosure consists of, in order from theobject side, a first lens L1 having a negative power, a second lens L2having a positive power, a third lens L3 having a positive power, afourth lens L4 having a negative power, a fifth lens L5 having apositive power, a sixth lens L6 having a positive power, and a seventhlens L7 having a negative power, the same as the imaging lens accordingto the first embodiment does. In the example illustrated in FIG. 1, anaperture stop St is disposed between the third lens L3 and the fourthlens L4.

Further, the imaging lens of the third embodiment is configured tosatisfy the following conditional formulae (2) and (5):νd7<55  (2)−0.93<(R3+R4)/(R3−R4)  (5)where,νd7 is the Abbe's number of the material for the seventh lens L7 withrespect to the d line,R3 is the radius of curvature of the object-side surface of the secondlens L2, andR4 is the radius of curvature of the image-side surface of the secondlens L2.

Each of the imaging lenses of the first embodiment through the thirdembodiment consists of, in order from the object side, a first lens L1having a negative power, a second lens L2 having a positive power, athird lens L3 having a positive power, a fourth lens L4 having anegative power, a fifth lens L5 having a positive power, a sixth lens L6having a positive power, and a seventh lens L7 having a negative power.Such a configuration facilitates manufacturing lenses having favorableresolution characteristics that correct various aberrations.

Further, by configuring the first lens L1, which is the most-object-sidelens, to have a negative power, a lens system can achieve a wide angleof view, and securing back focus and reducing the size of the lenssystem in the radial direction will be facilitated.

Further, by configuring the second lens L2 and the third lens L3 to havepositive powers and configuring the fifth lens L5 and the sixth lens L6to have positive powers, each portion bearing a positive power can beconstituted by two positive lenses within the lens system. Such aconfiguration will facilitate correction of spherical aberration andastigmatism.

In the imaging lens of the first embodiment, by satisfying the upperlimit defined by conditional formula (1), a decrease in the absolutevalue of the combined focal length of the first lens L1 and the secondlens L2 as a positive value can be suppressed. Thereby, suppressing theincrease in the negative power of the first lens L1 or increasing thepositive power of the second lens L2 will be facilitated. Accordingly,suppressing astigmatism will be facilitated.

By satisfying the upper limit defined by conditional formula (2),correcting lateral chromatic aberration will be facilitated, andobtaining favorable resolution characteristics will be facilitated aswell.

By satisfying the lower limit defined by conditional formula (3),correcting longitudinal chromatic aberration will be facilitated, andobtaining favorable resolution characteristics will be facilitated aswell.

In the imaging lens of the second embodiment, by satisfying the upperlimit defined by conditional formula (1), the decrease in the combinedfocal length of the first lens L1 and the second lens L2 can besuppressed. Thereby, suppressing the increase in the negative power ofthe first lens L1 or increasing the positive power of the second lens L2will be facilitated. Accordingly, suppressing astigmatism will befacilitated.

By satisfying the upper limit defined by conditional formula (4), theair space between the second lens L2 and the third lens L3 will beprevented from widening, and reducing the size of the lens system willbe facilitated.

In the imaging lens of the third embodiment, by satisfying the upperlimit defined by conditional formula (2), correcting lateral chromaticaberration will be facilitated, and obtaining favorable resolutioncharacteristics will be facilitated as well.

By satisfying the lower limit defined by conditional formula (5), theimage-side surface of the second lens L2 can be made convex, and thecorrection of spherical aberration and distortion will be facilitated.

Note that the imaging lens according to the first embodiment may havethe configuration of the imaging lens according to the second embodimentor the third embodiment, or may have the configuration of the imaginglens according to the second embodiment and the third embodiment.Further, the imaging lens according to the second embodiment may havethe configuration of the imaging lens according to the first embodimentor the third embodiment, or may have the configuration of the imaginglens according to the first embodiment and the third embodiment.Further, the imaging lens according to the third embodiment may have theconfiguration of the imaging lens according to the first embodiment orthe second embodiment, or may have the configuration of the imaging lensof the first embodiment and the second embodiment.

Further, the imaging lens according to the first embodiment may have aportion of the configuration of the imaging lens according to the secondembodiment, or may have a portion of the configuration of the imaginglens according to the third embodiment. The imaging lens according tothe second embodiment may have a portion of the configuration of theimaging lens according to the first embodiment, or may have a portion ofthe configuration of the imaging lens according to the third embodiment.The imaging lens according to the third embodiment may have a portion ofthe configuration of the imaging lens according to the first embodiment,or may have a portion of the configuration of the imaging lens accordingto the second embodiment.

Next, preferable configurations of the imaging lenses according to thefirst through third embodiments above of the present disclosure and theadvantageous effects thereof will be described. Note that preferably,the imaging lens may have any one of the configurations below, or mayhave an arbitrary combination of two or more of the configurations.1.8<f345/f  (6)f1/f2<−0.42  (7)−5.0<(R14+R15)/(R14−R15)<−0.01  (8)−0.8<(R5+R6)/(R5−R6)  (9)1.25<f5/f  (10)0.5<(R10+R11)/(R10−R11)  (11)(R12+R13)/(R12−R13)<1.0  (12)25<νd5  (13)0.5<f3/f<10  (14)0.5<f2/f<7  (15)f1/f<−0.25  (16)0.3<f123/f<15  (17)0.5<f234/f<18  (18)0.5<f12345/f<10  (19)0.4<f2345/f<10  (20)0.1<f3456/f<5.0  (21)−4.0<(R8+R9)/(R8−R9)<4.0  (22)−3<f/f45<3  (23)where,f is the focal length of the entire system,f1 is the focal length of the first lens L1,f2 is the focal length of the second lens L2,f3 is the focal length of the third lens L3,f5 is the focal length of the fifth lens L5,f45 is the combined focal length of the fourth lens L4 and the fifthlens L5,f123 is the combined focal length of the first lens L1, the second lensL2, and the third lens L3,f234 is the combined focal length of the second lens L2, the third lensL3, and the fourth lens L4,f345 is the combined focal length of the third lens L3, the fourth lensL4, and the fifth lens L5,f2345 is the combined focal length of the second lens L2, the third lensL3, the fourth lens L4, and the fifth lens L5,f3456 is the combined focal length of the third lens L3, the fourth lensL4, the fifth lens L5, and the sixth lens L6,f12345 is the combined focal length of the first lens L1, the secondlens L2, the third lens L3, the fourth lens L4, and the fifth lens L5,νd5 is the Abbe's number of the material for the fifth lens L5 withrespect to the d line,R5 is the radius of curvature of the object-side surface of the thirdlens L3,R6 is the radius of curvature of the image-side surface of the thirdlens L3,R8 is the radius of curvature of the object-side surface of the fourthlens L4,R9 is the radius of curvature of the image-side surface of the fourthlens L4,R10 is the radius of curvature of the object-side surface of the fifthlens L5,R11 is the radius of curvature of the image-side surface of the fifthlens L5,R12 is the radius of curvature of the object-side surface of the sixthlens L6,R13 is the radius of curvature of the image-side surface of the sixthlens L6,R14 is the radius of curvature of the object-side surface of the seventhlens L7, andR15 is the radius of curvature of the image-side surface of the seventhlens L7.

By satisfying the lower limit defined by conditional formula (6),preventing the combined focal length of the third lens L3 through thefifth lens L5 from decreasing as a positive value will be facilitated.Thereby, securing back focus will be facilitated or correctingastigmatism will be facilitated.

By satisfying the upper limit defined by conditional formula (7),suppressing the negative power of the first lens L1, i.e., increasingthe absolute value of the focal length of the first lens L1, will befacilitated. Further, correcting distortion will be facilitated.Alternatively, suppressing an excessive decrease in the positive powerof the second lens L2, i.e., decreasing the absolute value of the focallength of the second lens L2 will be facilitated, and correctingspherical aberration and astigmatism will be facilitated as well.

By satisfying the upper limit defined by conditional formula (8),configuring the radius of curvature of the object-side surface to besmaller than the radius of curvature of the image-side surface will befacilitated while the object-side surface of the seventh lens L7 isconcave. Thereby, correcting astigmatism will be facilitated orcorrecting lateral chromatic aberration will be facilitated.

By satisfying the lower limit defined by conditional formula (8),differentiating the radius of curvature of the object-side surface ofthe seventh lens L7 from the radius of curvature of the image-sidesurface of the seventh lens L7 and increasing the power of the seventhlens L7 will be facilitated while the seventh lens L7 is of a meniscusshape with a convex surface toward the image side. Further, correctingcomatic aberration will be facilitated.

By satisfying the lower limit defined by conditional formula (9),suppressing the increase in the absolute value of the radius ofcurvature of the image-side surface will be facilitated, and correctingcomatic aberration will be facilitated as well while the third lens L3is a biconvex lens.

By satisfying the lower limit defined by conditional formula (10),suppressing an excessive increase in the positive power of the fifthlens L5 will be facilitated. Thereby, securing back focus will befacilitated or suppressing the error sensitivity of the fifth lens L5with respect to eccentricity will be facilitated.

By satisfying the lower limit defined by conditional formula (11),suppressing the decrease in the absolute value of the radius ofcurvature of the object-side surface of the fifth lens L5 will befacilitated or configuring the object-side surface of the fifth lens L5to be concave will be facilitated while the object-side surface of thefifth lens L5 is convex. Further, correcting spherical aberration andcomatic aberration will be facilitated.

By satisfying the upper limit defined by conditional formula (12),configuring the sixth lens L6 to be a biconvex lens will be facilitated,and correcting spherical aberration will be facilitated as well.

By satisfying the lower limit defined by conditional formula (13),correcting longitudinal chromatic aberration will be facilitated.

By satisfying the upper limit defined by conditional formula (14),increasing the power of the third lens L3 will be facilitated, andcorrecting astigmatism and spherical aberration will be facilitated aswell.

By satisfying the lower limit defined by conditional formula (14),suppressing the power of the third lens L3 will be facilitated, andsuppressing the error sensitivity of the third lens L3 with respect toeccentricity will be facilitated.

By satisfying the upper limit defined by conditional formula (15),increasing the power of the second lens L2 will be facilitated, andcorrecting astigmatism, spherical aberration, and distortion will befacilitated.

By satisfying the lower limit defined by conditional formula (15),suppressing the power of the second lens L2 will be facilitated, andsuppressing the error sensitivity of the second lens L2 with respect toeccentricity will be facilitated.

By satisfying the upper limit defined by conditional formula (16),suppressing the power of the first lens L1 will be facilitated,resulting in correction of astigmatism being facilitated.

By satisfying the upper limit defined by conditional formula (17),suppressing the increase in the combined focal length of the first lensL1 through the third lens L3 as a positive value will be facilitated,and suppressing astigmatism and spherical aberration will be facilitatedas well.

By satisfying the lower limit defined by conditional formula (17),suppressing the decrease in the combined focal length of the first lensL1 through the third lens L3 as a positive value will be facilitated,and achieving a wide angle of view will be facilitated as well.

By satisfying the upper limit defined by conditional formula (18),suppressing the increase in the combined focal length of the second lensL2 through the fourth lens L4 as a positive value will be facilitated,resulting in correction of astigmatism being facilitated.

By satisfying the lower limit defined by conditional formula (18),suppressing the decrease in the combined focal length of the second lensL2 through the fourth lens L4 as a positive value will be facilitated,and securing back focus will be facilitated or correcting sphericalaberration will be facilitated.

By satisfying the upper limit defined by conditional formula (19),suppressing an excessive increase in the combined focal length of thefirst lens L1 through the fifth lens L5 as a positive value will befacilitated. Thereby, reducing the size of the lens system will befacilitated or correcting spherical aberration will be facilitated.

By satisfying the lower limit defined by conditional formula (19),suppressing an excessive decrease in the combined focal length of thefirst lens L1 through the fifth lens L5 as a positive value will befacilitated, and securing back focus will be facilitated.

By satisfying the upper limit defined by conditional formula (20),suppressing an excessive increase in the combined focal length of thesecond lens L2 through the fifth lens L5 as a positive value will befacilitated. Thereby, shortening the total length of the lens systemwill be facilitated or suppressing lateral chromatic aberration will befacilitated.

By satisfying the lower limit defined by conditional formula (20),suppressing an excessive decrease in the combined focal length of thesecond lens L2 through the fifth lens L5 as a positive value will befacilitated. Thereby, correcting longitudinal chromatic aberration willbe facilitated or securing long back focus will be facilitated.

By satisfying the upper limit defined by conditional formula (21),suppressing an excessive increase in the combined focal length of thethird lens L3 through the sixth lens L6 as a positive value will befacilitated, and correcting spherical aberration, astigmatism, orlateral chromatic aberration will be facilitated.

By satisfying the lower limit defined by conditional formula (21),suppressing an excessive decrease in the combined focal length of thethird lens L3 through the sixth lens L6 as a positive value will befacilitated. Thereby, achieving a wide angle of view will befacilitated, or correcting longitudinal chromatic aberration will befacilitated.

By satisfying the upper limit defined by conditional formula (22),differentiating the radius of curvature of the object-side surface ofthe fourth lens L4 from the radius of curvature of the image-sidesurface of the fourth lens L4 and increasing the power of the fourthlens L4 will be facilitated while the fourth lens L4 is of a meniscusshape with a concave surface toward the image side. Further, correctinglongitudinal chromatic aberration will be facilitated, or correctingcomatic aberration and astigmatism will be facilitated.

By satisfying the lower limit defined by conditional formula (22),differentiating the radius of curvature of the object-side surface ofthe fourth lens L4 from the radius of curvature of the image-sidesurface of the fourth lens L4 and increasing the power of the fourthlens L4 will be facilitated while the fourth lens L4 is of a meniscusshape with a concave surface toward the image side. Further, correctinglongitudinal chromatic aberration or spherical aberration will befacilitated.

By satisfying the upper limit defined by conditional formula (23),suppressing an excessive decrease in the combined focal length of thefourth lens L4 and the fifth lens L5 as a positive value will befacilitated. Thereby, increasing the negative power of the fourth lensL4 will be facilitated and correcting longitudinal chromatic aberrationbeing facilitated.

By satisfying the lower limit defined by conditional formula (23),suppressing an excessive decrease in the combined focal length of thefourth lens L4 and the fifth lens L5 as a negative value, resulting inthe increase in the positive power of the fifth lens L5 beingfacilitated. Thereby, correcting spherical aberration being facilitated,or suppressing the total length of the lens system will be facilitated.

Note that it is preferable for the conditional formulas below, in eachof which the upper or lower limits are added to the conditional formulaeabove or the lower or upper limits are changed in the conditionalformulas above to be further satisfied so as to improve the aboveadvantageous effects. In addition, preferably, the conditional formulaeto be described below, each of which is configured by combining achanged value of the lower limit and a changed value of the upper limit,may be satisfied. Preferred modifications of conditional formulae willbe described below as an example, but the modifications of conditionalformulae are not limited to those listed below and the changed valuesdescribed below may be combined.

It is preferable for the upper limit defined by conditional formula (1)to be −3.3, and more preferably −3.5.

It is preferable for conditional formula (1) to be provided with thelower limit and for the lower limit to be −50. Thereby, suppressing anexcessive decrease in the negative power of the first lens L1 will befacilitated. Further, achieving a wide angle of view will be facilitatedor reducing the size of the lens system in the radial direction will befacilitated. It is more preferable for the lower limit defined byconditional formula (1) to be −40, even more preferably −35, and stillmore preferably −30. As described above, it is more preferable forconditional formulae (1-1) through (1-5) below to be satisfied:f12/f<−3.3  (1-1)f12/f<−3.5  (1-2)−50<f12/f<−3.2  (1-3)−40<f12/f<−3.3  (1-4)−35<f12/f<−3.3  (1-5).

It is preferable for the upper limit defined by conditional formula (2)to be 50, more preferably 45, even more preferably 42, and still morepreferably 35.

It is preferable for conditional formula (2) to be provided with thelower limit, and for the lower limit to be 15. Thereby, suppressing thecost for the material of the seventh lens L7 will be facilitated. It ismore preferable for the lower limit defined by conditional formula (2)to be 17. As described above, it is preferable for conditional formulae(2-1) through (2-5) below to be satisfied, for example:15<νd7<55  (2-1)νd7<50  (2-2)νd7<45  (2-3)νd7<42  (2-4)15<νd7<45  (2-5).

It is preferable for conditional formula (3) to be provided with theupper limit, and for the upper limit to be 85. Thereby, reducing thecost for the material of the third lens L3 will be facilitated. It ismore preferable for the upper limit defined by conditional formula (3)to be 70, even more preferably 68, and still more preferably 65.

It is preferable for the lower limit defined by conditional formula (3)to be 45, more preferably 50, and even more preferably 52. As describedabove, it is preferable for conditional formulae (3-1) through (3-6)below to be satisfied, for example:40<νd3<85  (3-1)40<νd3<70  (3-2)45<νd3  (3-3)50<νd3  (3-4)52<νd3  (3-5)50<νd3<68  (3-6).

It is preferable for the upper limit defined by conditional formula (4)to be 0.35, more preferably 0.3, even more preferably 0.25, still morepreferably 0.2, even still more preferably, 0.15, and most preferably0.1.

It is preferable for the lower limit defined by conditional formula (4)to be 0.01, more preferably 0.02, even more preferably 0.03, and stillmore preferably 0.04. As described above, it is preferable forconditional formulae (4-1) through (4-10) below to be satisfied:0.0<D4/f<0.35  (4-1)0.0<D4/f<0.3  (4-2)0.0<D4/f<0.25  (4-3)0.0<D4/f<0.2  (4-4)0.0<D4/f<0.15  (4-5)0.0<D4/f<0.1  (4-6)0.01<D4/f<0.35  (4-7)0.02<D4/f<0.3  (4-8)0.03<D4/f<0.25  (4-9)0.04<D4/f<0.2  (4-10).

It is preferable for conditional formula (5) to be provided with theupper limit, and for the upper limit to be 10. Thereby, increasing adifference in the radii of curvature of the object-side surface and theimage-side surface of the second lens L2 will be facilitated, resultingin the increase in the power of the second lens L2 being facilitated.Further, correcting spherical aberration will be facilitated. It ispreferable for the upper limit defined by conditional formula (5) to be8, more preferably 6, even more preferably 5, and still more preferably4.

It is preferable for the lower limit defined by conditional formula (5)to be −0.9, more preferably −0.89, even more preferably −0.88, stillmore preferably 0.0, and most preferably 0.1. As described above, it ispreferable for conditional formulae (5-1) through (5-7) below to besatisfied, for example:−0.93<(R3+R4)/(R3−R4)<10  (5-1)−0.93<(R3+R4)/(R3−R4)<8  (5-2)−0.9<(R3+R4)/(R3−R4)<6  (5-3)−0.89<(R3+R4)/(R3−R4)<5  (5-4)−0.9<(R3+R4)/(R3−R4)<4  (5-5)−0.88<(R3+R4)/(R3−R4)  (5-6)0.0<(R3+R4)/(R3−R4)  (5-7).

It is preferable for conditional formula (6) to be provided with theupper limit, and for the upper limit to be 15. Thereby, reducing thetotal length will be facilitated. It is preferable for the upper limitdefined by conditional formula (6) to be 10, more preferably 8, andstill more preferably 7.

It is preferable for the lower limit defined by conditional formula (6)to be 1.85, more preferably 1.9, and even more preferably 1.95. Asdescribed above, it is preferable for conditional formulae (6-1) through(6-5) below to be satisfied, for example:1.8<f345/f<15  (6-1)1.8<f345/f<10  (6-2)1.8<f345/f<8  (6-3)1.9<f345/f<10  (6-4)1.85<f345/f<7  (6-5).

It is preferable for the upper limit defined by conditional formula (7)to be −0.43, and more preferably −0.44.

It is preferable for conditional formula (7) to be provided with thelower limit, and for the lower limit to be −5. Thereby, suppressing adecrease in the negative power of the first lens L1, i.e., decreasingthe absolute value of the focal length of the first lens L1, will befacilitated, and achieving a wide angle of view will be facilitated. Itis preferable for the lower limit defined by conditional formula (7) tobe −3, more preferably −2, even more preferably −1, still morepreferably −0.8, and most preferably −0.7. As described above, it ispreferable for conditional formulae (7-1) through (7-6) below, forexample, to be satisfied:−5<f1/f2<−0.43  (7-1)−3<f1/f2<−0.42  (7-2)−2<f1/f2<−0.42  (7-3)−1<f1/f2<−0.42  (7-4)−0.8<f1/f2<−0.42  (7-5)−0.7<f1/f2<−0.42  (7-6).

It is preferable for the upper limit defined by conditional formula (8)to be −0.2, more preferably −0.3, even more preferably −0.4, and mostpreferably −0.5.

It is preferable for the lower limit defined by conditional formula (8)to be −2.1, more preferably −2.0, even more preferably −1.9, and stillmore preferably −1.8. As described above, it is preferable forconditional formulae (8-1) through (8-10) below to be satisfied, forexample:−4.0<(R14+R15)/(R14−R15)<−0.01  (8-1)−3.0<(R14+R15)/(R14−R15)<−0.01  (8-2)−3.0<(R14+R15)/(R14−R15)<−0.2  (8-3)−2.1<(R14+R15)/(R14−R15)<−0.01  (8-4)−2.0<(R14+R15)/(R14−R15)<−0.2  (8-5)−1.9<(R14+R15)/(R14−R15)<−0.2  (8-6)−2.0<(R14+R15)/(R14−R15)<−0.3  (8-7)−1.8<(R14+R15)/(R14−R15)<−0.3  (8-8)−2.2<(R14+R15)/(R14−R15)<−0.4  (8-9)−2.1<(R14+R15)/(R14−R15)<−0.4  (8-10).

It is preferable for the upper limit defined by conditional formula (9),and for the upper limit to be 3.0. Thereby, suppressing a decrease inthe radius of curvature of the object-side surface, which is concave, ofthe third lens L3 will be facilitated, resulting in correction ofspherical aberration being facilitated. It is more preferable for theupper limit defined by conditional formula (9) to be 2.0, even morepreferably 1.0, still more preferably 0.95, and most preferably 0.9.

It is preferable for the lower limit defined by conditional formula (9)to be −0.75, more preferably −0.7, and still more preferably −0.68. Asdescribed above, it is preferable for conditional formulae (9-1) through(9-7) to be satisfied, for example.−0.8<(R5+R6)/(R5−R6)<2.0  (9-1)−0.8<(R5+R6)/(R5−R6)<1.0  (9-2)−0.8<(R5+R6)/(R5−R6)<0.95  (9-3)−0.8<(R5+R6)/(R5−R6)<0.9  (9-4)−0.75<(R5+R6)/(R5−R6)<1.0  (9-5)−0.7<(R5+R6)/(R5−R6)<1.0  (9-6)−0.68<(R5+R6)/(R5−R6)<2.0  (9-7).

It is preferable for conditional formula (10) to be provided with theupper limit, and for the upper limit to be 10. Thereby, increasing thepositive power of the fifth lens L5 will be facilitated, resulting insuppression of angles, at which peripheral light rays enter an imagesensor, being facilitated. It is more preferable for the upper limitdefined by conditional formula (10) to be 8.0, even more preferably 5.0,still more preferably 4.0, and most preferably 3.5.

It is preferable for the lower limit defined by conditional formula (10)to be 1.27, more preferably 1.28, and still more preferably 1.3. Asdescribed above, it is preferable for conditional formulae (10-1)through (10-7) below to be satisfied, for example:1.25<f5/f<10  (10-1)1.25<f5/f<8.0  (10-2)1.25<f5/f<5.0  (10-3)1.27<f5/f<4.0  (10-4)1.25<f5/f<3.5  (10-5)1.28<f5/f<5.0  (10-6)1.3<f5/f<5.0  (10-7).

It is preferable for conditional formula (11) to be provided with theupper limit, and for the upper limit to be 5.0. Thereby, increasing thepower of the fifth lens L5 will be facilitated, resulting in suppressionof angles, at which chief rays of off-axis rays enter the image sensor,being facilitated or correction of spherical aberration beingfacilitated. It is more preferable for the upper limit defined byconditional formula (11) to be 4.0, even more preferably 3.0, still morepreferably 2.5, and further more preferably 2.3.

It is preferable for the lower limit defined by conditional formula (11)to be 0.6, more preferably 0.65, even more preferably 0.7, and stillmore preferably 0.8. As described above, it is preferable forconditional formulae (11-1) through (11-8) below to be satisfied, forexample:0.65<(R10+R11)/(R10−R11)  (11-1)0.5<(R10+R11)/(R10−R11)<5.0  (11-2)0.6<(R10+R11)/(R10−R11)<4.0  (11-3)0.7<(R10+R11)/(R10−R11)<3.0  (11-4)0.5<(R10+R11)/(R10−R11)<2.5  (11-5)0.5<(R10+R11)/(R10−R11)<2.3  (11-6)0.8<(R10+R11)/(R10−R11)<4.0  (11-7)0.65<(R10+R11)/(R10−R11)<3.0  (11-8).

It is preferable for the upper limit defined by conditional formula (12)to be 0.7, more preferably 0.5, even more preferably 0.3, still morepreferably 0.2, and most preferably 0.1.

It is preferable for conditional formula (12) to be provided with thelower limit, and for the lower limit to be −1.0. Thereby, suppressing adecrease in the radius of curvature of the object-side surface beingfacilitated, resulting in correction of field curvature and comaticaberration being facilitated while the sixth lens L6 is a biconvex lens.It is more preferable for the lower limit defined by conditional formula(12) to be −0.9, even more preferably −0.8, still more preferably −0.7,and most preferably −0.6. As described above, it is preferable forconditional formulae (12-1) through (12-7) below to be satisfied, forexample:−1.0<(R12+R13)/(R12−R13)<1.0  (12-1)(R12+R13)/(R12−R13)<0.5  (12-2)−0.9<(R12+R13)/(R12−R13)<0.3  (12-3)−0.8<(R12+R13)/(R12−R13)<0.2  (12-4)−0.7<(R12+R13)/(R12−R13)<0.5  (12-5)−0.6<(R12+R13)/(R12−R13)<0.7  (12-6)−0.8<(R12+R13)/(R12−R13)<0.3  (12-7).

It is preferable for conditional formula (13) to be provided with theupper limit, and for the upper limit to be 85. Thereby, reducing thecost for the material of the fifth lens L5 will be facilitated. It ismore preferable for the upper limit defined by conditional formula (13)to be 70, even more preferably 68, and still more preferably 65.

It is preferable for the lower limit defined by conditional formula (13)to be 28, more preferably 30, and even more preferably 35. As describedabove, it is preferable for conditional formulae (13-1) through (13-5)below to be satisfied, for example:30<νd5  (13-1)25<νd5<85  (13-2)25<νd5<70  (13-3)28<νd5<68  (13-4)30<νd5<65  (13-5).

It is preferable for the upper limit defined by conditional formula (14)to be 8, more preferably 7, even more preferably 6, still morepreferably 5, and most preferably 4.5.

It is preferable for the lower limit defined by conditional formula (14)to be 0.6, more preferably 0.8, even more preferably 1.0, and still morepreferably 1.2. As described above, it is preferable for conditionalformulae (14-1) through (14-7) below to be satisfied, for example:0.5<f3/f<7  (14-1)0.8<f3/f<10  (14-2)0.5<f3/f<10  (14-3)0.6<f3/f<8  (14-4)0.8<f3/f<7  (14-5)1.0<f3/f<6  (14-6)1.2<f3/f<5  (14-7).

It is preferable for the upper limit defined by conditional formula (15)to be 6.5, more preferably 6, even more preferably 5, and still morepreferably 4.5.

It is preferable for the lower limit defined by conditional formula (15)to be 0.7, more preferably 0.9, even more preferably 1.2, still morepreferably 1.5, and most preferably 1.7. As described above, it ispreferable for conditional formulae (15-1) through (15-7) below to besatisfied, for example:0.5<f2/f<6  (15-1)0.9<f2/f<7  (15-2)0.7<f2/f<6.5  (15-3)0.9<f2/f<6  (15-4)1.2<f2/f<5  (15-5)1.5<f2/f<4.5  (15-6)1.7<f2/f<7  (15-7).

It is preferable for the upper limit defined by conditional formula (16)to be −0.4, more preferably −0.6, even more preferably −0.8, and stillmore preferably −1.0.

It is preferable for conditional formula (16) to be provided with thelower limit, and for the lower limit to be −10. Thereby, increasing thepower of the first lens L1 will be facilitated, resulting in achievementof a wide angle of view being facilitated. It is preferable for thelower limit defined by conditional formula (16) to be −8, morepreferably −7, even more preferably −5, still more preferably −3, andmost preferably −2. As described above, it is preferable for conditionalformulae (16-1) through (16-7) below to be satisfied, for example:−10<f1/f<−0.25  (16-1)−8<f1/f<−0.25  (16-2)−8<f1/f<−0.4  (16-3)−7<f1/f<−0.4  (16-4)−5<f1/f<−0.6  (16-5)−3<f1/f<−0.8  (16-6)−2<f1/f<−1.0  (16-7).

It is preferable for the upper limit defined by conditional formula (17)to be 10, more preferably 8, even more preferably 6, and still morepreferably 5.

It is preferable for the lower limit defined by conditional formula (17)to be 0.5, more preferably 0.8, even more preferably 1.0, and still morepreferably 1.1. As described above, it is preferable for conditionalformulae (17-1) through (17-8) below to be satisfied, for example:0.3<f123/f<15  (17-1)0.5<f123/f<10  (17-2)0.8<f123/f<8  (17-3)1.0<f123/f<6  (17-4)1.1<f123/f<5  (17-5)0.3<f123/f<10  (17-6)0.5<f123/f<6  (17-7)0.8<f123/f<8  (17-8).

It is preferable for the upper limit defined by conditional formula (18)to be 15, more preferably 10, even more preferably 8, still morepreferably 7, and most preferably 6.

It is preferable for the lower limit defined by conditional formula (18)to be 0.8, more preferably 1.0, and even more preferably 1.2. Asdescribed above, it is preferable for conditional formulae (18-1)through (18-7) below to be satisfied, for example:0.5<f234/f<10  (18-1)0.8<f234/f<15  (18-2)1.0<f234/f<8  (18-3)1.2<f234/f<7  (18-4)1.0<f234/f<6  (18-5)0.8<f234/f<8  (18-6)0.5<f234/f<6  (18-7).

It is preferable for the upper limit defined by conditional formula (19)to be 9, more preferably 8, even more preferably 7, still morepreferably 6, and most preferably 5.5.

It is preferable for the lower limit defined by conditional formula (19)to be 0.8, more preferably 1.0, even more preferably 1.2, and still morepreferably 1.5. As described above, it is preferable for conditionalformulae (19-1) through (19-8) below to be satisfied, for example:0.5<f12345/f<8  (19-1)0.5<f12345/f<9  (19-2)0.8<f12345/f<8  (19-3)1.0<f12345/f<7  (19-4)1.2<f12345/f<6  (19-5)1.5<f12345/f<5.5  (19-6)0.8<f12345/f<10  (19-7)0.8<f12345/f<7  (19-8).

It is preferable for the upper limit defined by conditional formula (20)to be 8, more preferably 6, even more preferably 5, still morepreferably 4, and most preferably 3.

It is preferable for the lower limit defined by conditional formula (20)to be 0.6, more preferably 0.8, even more preferably 1.0, and still morepreferably 1.2. As described above, it is preferable for conditionalformulae (20-1) through (20-7) below to be satisfied, for example:0.6<f2345/f<8  (20-1)0.8<f2345/f<6  (20-2)1.0<f2345/f<5  (20-3)1.2<f2345/f<4  (20-4)1.0<f2345/f<3  (20-5)0.4<f2345/f<6  (20-6)0.8<f2345/f<8  (20-7).

It is preferable for the upper limit defined by conditional formula (21)to be 4.0, more preferably 3.0, and even more preferably 2.0.

It is preferable for the lower limit defined by conditional formula (21)to be 0.3, more preferably 0.5, and even more preferably 0.6. Asdescribed above, it is preferable for conditional formulae (21-1)through (21-6) below to be satisfied, for example:0.3<f3456/f<4.0  (21-1)0.5<f3456/f<3.0  (21-2)0.6<f3456/f<2.0  (21-3)0.3<f3456/f<5.0  (21-4)0.1<f3456/f<2.0  (21-5)0.3<f3456/f<3.0  (21-6).

It is preferable for the upper limit defined by conditional formula (22)to be 3.0, more preferably 2.0, even more preferably 1.0, and still morepreferably 0.9.

It is preferable for the lower limit defined by conditional formula (22)to be −3.5, more preferably −3.0, even more preferably −2.5, and stillmore preferably −2.0. As described above, it is preferable forconditional formulae (22-1) through (22-5) below to be satisfied, forexample:−3.5<(R8+R9)/(R8−R9)<3.0  (22-1)−3.0<(R8+R9)/(R8−R9)<2.0  (22-2)−2.5<(R8+R9)/(R8−R9)<1.0  (22-3)−2.0<(R8+R9)/(R8−R9)<2.0  (22-4)−3.0<(R8+R9)/(R8−R9)<3  (22-5).

It is preferable for the upper limit defined by conditional formula (23)to be 2, more preferably 1, even more preferably 0.7, still morepreferably 0.5, further more preferably 0.3, and most preferably 0.2.

It is preferable for the lower limit defined by conditional formula (23)to be −2, more preferably −1, even more preferably −0.7, still morepreferably −0.5, and most preferably −0.3. As described above, it ispreferable for conditional formulae (23-1) through (23-6) below to besatisfied, for example:−1<f/f45<1  (23-1)−0.7<f/f45<0.7  (23-2)−0.5<f/f45<0.5  (23-3)−0.3<f/f45<1  (23-4)−1<f/f45<0.3  (23-5)−0.5<f/f45<0.3  (23-6).

The aperture stop refers to a stop which determines the F number (Fno)of the lens system. It is preferable for the aperture stop to bedisposed on the object side of the sixth lens L6. In this case, “theaperture stop is disposed on the object side of the sixth lens L6” meansthat the center (the position of the optical axis) of the aperture stopis more toward the object side than the image-side surface of the sixthlens L6. By disposing the aperture stop on the object side of the sixthlens L6, decreasing the aperture diameter of the first lens L1 will befacilitated, resulting in the reduction in the diameters of lenses beingfacilitated. For example, when the imaging lenses of the presentembodiments are used in vehicle mounted cameras, lens portions, whichare exposed to the exterior of a vehicle, are required to be made smallso as not to spoil the appearance of vehicles. By disposing the aperturestop on the object side of the sixth lens L6, decreasing the aperturediameter of the first lens L1 will be facilitated. Thereby, making thelens portions which are exposed to the exterior of a vehicle small willbe facilitated. Further, suppressing the angles at which light raysenter the image sensor will be facilitated, resulting in suppression ofshading being facilitated.

It is preferable for the aperture stop to be disposed on the object sideof the fifth lens L5.

It is preferable for the aperture stop to be disposed on the object sideof the image-side surface of the fourth lens L4. Thereby, miniaturizingportions which are exposed to the exterior of the lens system will befacilitated.

It is preferable for the aperture stop to be disposed on the image sideof the second lens L2. Thereby, the diameters of the seventh lens L7 andthe first lens L1 can be balanced, resulting in reduction in the entirelens diameter being facilitated.

It is preferable for the aperture stop to be disposed on the image sideof the third lens L3.

In order to miniaturize the portions which are exposed to the exteriorof the lens system and reduce the diameters of the entire lens system ina well-balanced manner, it is preferable for the aperture stop to bedisposed between the second lens L2 and the third lens L3, between thethird lens L3 and the fourth lens L4, or between the fourth lens L4 andthe fifth lens L5.

It is preferable for the first lens L1 to have a convex surface towardthe object side. Thereby, correcting distortion favorably will befacilitated.

It is preferable for the first lens L1 to have a meniscus shape with aconvex surface toward the object side. Thereby, correcting distortionwill be facilitated.

It is preferable for the second lens L2 to be a lens having a convexsurface toward the image side. Thereby, correcting astigmatism will befacilitated.

It is preferable for the object-side surface of the second lens L2 to beconcave. Thereby, correcting distortion will be facilitated. Theobject-side surface of the second lens L2 may be convex. Thereby,correcting astigmatism will be facilitated.

It is preferable for the object-side surface of the third lens L3 to beconvex. Thereby, correcting astigmatism will be facilitated.

It is preferable for the image-side surface of the third lens L3 to beconvex. Thereby, correcting spherical aberration will be facilitated.

It is preferable for the object-side surface of the fourth lens L4 to beconcave. Thereby, increasing the negative power of the fourth lens L4will be facilitated, resulting in correction of longitudinal chromaticaberration or astigmatism being facilitated.

It is preferable for the image-side surface of the fourth lens L4 to beconcave. Thereby, increasing the negative power of the fourth lens L4will be facilitated, resulting in correction of longitudinal chromaticaberration or spherical aberration being facilitated.

It is preferable for the object-side surface of the fifth lens L5 to beconcave. Thereby, correcting astigmatism will be facilitated.

It is preferable for the image-side surface of the fifth lens L5 to beconvex or planar. Thereby, correcting spherical aberration will befacilitated.

It is preferable for the object-side surface of the sixth lens L6 to beconvex. Thereby, correcting spherical aberration will be facilitated.

It is preferable for the image-side surface of the sixth lens L6 to beconvex. Thereby, correcting astigmatism will be facilitated.

It is preferable for the object-side surface of the seventh lens L7 tobe concave. Thereby, correcting astigmatism will be facilitated.

It is preferable for the image-side surface of the seventh lens L7 to beplanar or convex. Thereby, suppressing the angles at which the chiefrays of the off-axis rays enter the image sensor will be facilitated.Alternatively, the image-side surface of the seventh lens L7 may beconcave. Thereby, correcting astigmatism will be facilitated.

It is preferable for the Abbe's number of the material for the firstlens L1 with respect to the d line to be greater than or equal to 30.This enables longitudinal chromatic aberration and lateral chromaticaberration to be corrected favorably. In addition, it is more preferablefor the Abbe's number of the material for the first lens L1 with respectto the d line to be greater than or equal to 35, and even morepreferably greater than or equal to 40.

It is preferable for the Abbe's number of the material for the firstlens L1 with respect to the d line to be less than or equal to 85.Thereby, increasing the refractive index of the material for the firstlens L1 will be facilitated, resulting in achievement of a wide angle ofview or reduction in the cost for the material of the first lens L1 willbe facilitated. In addition, it is more preferable for the Abbe's numberof the material for the first lens L1 with respect to the d line to beless than or equal to 80, even more preferably less than or equal to 70,and still more preferably less than or equal to 65.

It is preferable for the Abbe's number of the material for the secondlens L2 with respect to the d line to be greater than or equal to 15.This enables longitudinal chromatic aberration to be correctedfavorably. In addition, it is more preferable for the Abbe's number ofthe material for the second lens L2 with respect to the d line to begreater than or equal to 18, and even more preferably greater than orequal to 20.

It is preferable for the Abbe's number of the material for the secondlens L2 with respect to the d line to be less than or equal to 60. Thisenables lateral chromatic aberration to be corrected favorably. Inaddition, it is more preferable for the Abbe's number of the materialfor the second lens L2 with respect to the d line to be less than orequal to 50, and even more preferably less than or equal to 45.

It is preferable for the Abbe's number of the material for the fourthlens L4 with respect to the d line to be less than or equal to 40. Thisenables longitudinal chromatic aberration to be corrected favorably. Inaddition, it is more preferable for the Abbe's number of the materialfor the fourth lens L4 with respect to the d line to be less than orequal to 35, even more preferably less than or equal to 30, still morepreferably less than or equal to 25, and most preferably less than orequal to 20.

It is preferable for the Abbe's number of the material for the sixthlens L6 with respect to the d line to be greater than or equal to 30.This enables longitudinal chromatic aberration and lateral chromaticaberration to be corrected favorably. In addition, it is more preferablefor the Abbe's number of the material for the sixth lens L6 with respectto the d line to be greater than or equal to 40, even more preferablygreater than or equal to 50, and still more preferably greater than orequal to 55.

It is preferable for the Abbe's number of the material for the sixthlens L6 with respect to the d line to be less than or equal to 80.Thereby, reducing the cost for the material of the sixth lens L6 will befacilitated, or increasing the refractive index of the sixth lens L6will be facilitated, resulting in correction of field curvature beingfacilitated. In addition, it is more preferable for the Abbe's number ofthe material for the sixth lens L6 with respect to the d line to be lessthan or equal to 70, and even more preferably less than or equal to 65.

In the imaging lenses according to the first through the thirdembodiments of the present disclosure, it is preferable for one of thesurfaces of each lens of the first lens L1 through the seventh lens L7to be aspherical. This enables various aberrations to be correctedfavorably.

It is preferable for at least one of the surfaces of the second lens L2to be aspherical. By configuring at least one of the surfaces of thesecond lens L2 to be aspherical, correcting field curvature andspherical aberration will be facilitated. This enables favorableresolution to be obtained. It is more preferable for both surfaces ofthe second lens L2 to be aspherical.

It is preferable for the object-side surface of the second lens L2 to beaspherical. Thereby, correcting spherical aberration, astigmatism, anddistortion favorably will be facilitated.

It is preferable for the image-side surface of the second lens L2 to beaspherical. Thereby, correcting spherical aberration, astigmatism, anddistortion favorably will be facilitated.

It is preferable for the object-side surface of the second lens L2 tohave a shape in which the center (paraxial region) has a positive powerand the edge of the effective diameter has a weaker positive power thanthat of the center. Alternatively, it is preferable for the object-sidesurface of the second lens L2 to have a shape in which the center has apositive power and the edge of the effective diameter has a negativepower. Thereby, correcting spherical aberration and astigmatism will befacilitated.

In aspherical surfaces, “a convex surface (a positive power)” and “aconcave surface (a negative power)” should be considered in paraxialregions, unless otherwise noted. The power at each of the points inregions outside the paraxial regions in aspherical surfaces should bedetermined depending on whether the absolute value of the radius ofcurvature at a certain point is larger or smaller than the absolutevalue of the paraxial radius of curvature. In such a case, the radius ofcurvature at the certain point is the length from the certain point tothe point at which the normal line of the surface at the certain pointintersects with the optical axis. When the absolute value of the radiusof curvature at a certain point on an aspherical surface is greater thanthe absolute value of the paraxial radius of curvature, power at thepoint is smaller (weaker) than those in the paraxial regions. When theabsolute value of the radius of curvature at a certain point on anaspherical surface is smaller than the absolute value of the paraxialradius of curvature, the power at the point is greater (stronger) thanthose in the paraxial regions.

In aspherical surfaces, “a convex surface (a positive power)” or “aconcave surface (a negative power)” at each of the points in regionsoutside the paraxial regions is determined depending on which side of apoint at which a surface at a certain point intersects with the opticalaxis a point at which the normal line intersects with the optical axisis. In the case that a surface is on the object side, when a point atwhich the normal line intersects with the optical axis is on the imageside of a point at which a surface at a certain point intersects withthe optical axis, the surface at the certain point is a convex surface(positive power). Further, when a point at which the normal lineintersects with the optical axis is on the object side of a point atwhich a surface at a certain point intersects with the optical axis, thesurface at the certain point is concave (negative power). In the casethat a surface is on the image side, when a point at which the normalline intersects with the optical axis is on the object side of a pointat which a surface at a certain point intersects with the optical axis,the surface at the certain point is convex (positive power). Further,when a point at which the normal line intersects with the optical axisis on the image side of a point at which a surface at a certain pointintersects with the optical axis, the surface at the certain point isconcave (negative power).

Note that “the effective diameter of a surface” refers to the diameterof a circle constituted by an outermost point in the radial direction (apoint farthest from the optical axis) among points where all of the rayscontributing to image formation intersect with lens surfaces, and theterm “edge of the effective diameter” refers to this outermost point.Note that in systems which have rotation symmetry with respect to theoptical axis, a graphic constituted by the above outermost point is acircle. However, in systems which do not have rotation symmetry, thegraphic is not a circle. In such a case, the diameter of an equivalentcircle may be the effective diameter.

A shape of an aspherical surface will be specifically described below.FIG. 2 is a diagram for describing the shape of a second lens surface.Here, a lens surface of each lens is i. “i” is a symbol which representsthe corresponding lens surface. For example, when the object-sidesurface of the second lens L2 is represented by 3, the followingdescription with respect to the object-side surface of the second lensL2 can be understood with i as 3. Further, when a certain point on alens surface i is designated as Xi and an intersection of the normalline on the point and the optical axis is designated as Pi, the length(|Xi-Pi|) of Xi-Pi is defined as the absolute value |RXi| of the radiusof curvature on the point Xi, and Pi is defined as the center ofcurvature at the point Xi. Further, an intersection of the i-th lenssurface and the optical axis is designated as Qi. In this case, a powerat a point Xi is defined depending on whether a point Pi is on theobject side or the image side based on a point Qi as the reference. Inthe object-side surface, in the case that a point Pi is on the imageside of a point Qi, the power is defined as positive, whereas in thecase that the point Pi is on the object side of the point Qi, the poweris defined as negative. In the image-side surface, in the case that thepoint Pi is on the object side of the point Qi, the power is defined aspositive, whereas in the case that the point Pi is on the image side ofthe point Qi, the power is defined as negative.

When the power in the center is compared to the power at the point Xi,the absolute value of the radius of curvature in the center (paraxialradius of curvature) is compared to the absolute value |RXi| of theradius of curvature at the point Xi. In the case that |RXi| is smallerthan the absolute value of the paraxial radius of curvature, the powerat the point Xi is greater than the power in the center. In contrast, inthe case that |RXi| is greater than the absolute value of the paraxialradius of curvature, the power at the point Xi is weaker than the powerin the center. The same applies to both the case that a surface has thepositive power and the case that a surface has the negative power.

Here, referring to FIG. 2, the shape of the object-side surface of thesecond lens L2 above will be described. FIG. 2 illustrates an opticalpath diagram of the imaging lens 1 illustrated in FIG. 1. In FIG. 2, apoint Q3 is the center of the object-side surface of the second lens L2,and an intersection of the object-side surface of the second lens L2 andthe optical axis Z. Further, in FIG. 2, the point X3 on the object-sidesurface of the second lens L2 is at the edge of the effective diameter,and is an intersection of the outermost ray, which is included inoff-axis rays 3, and the object-side surface of the second lens L2. InFIG. 2, although the point X3 is at the edge of the effective diameter,the point X3 is an arbitrary point on the object-side surface of thesecond lens L2. Therefore, other points can be understood in the samemanner.

In this case, an intersection of the normal line of a lens surface at apoint X3 with the optical axis Z is defined as a point P3 as illustratedin FIG. 2, a line segment X3-P3 connecting between a point X3 and apoint P3 is defined as the radius of curvature RX3 at the point X3, andthe length |X3-P3| of the line segment X3-P3 is defined as the absolutevalue |RX3| of the radius of curvature RX3. That is, |X3-P3| is |RX3|.Further, the radius of curvature at the point Q3, i.e., the radius ofcurvature in the center of the object-side surface of the second lens L2is designated as R3, and the absolute value thereof is designated as|R3| (not shown in FIG. 2 because the value of |R3| is extremely large).

For example, the expression “a shape in which the center has a positivepower and the edge of the effective diameter has a negative power” ofthe object-side surface of the second lens L2 described above means,when a point X3 is the edge of the effective diameter, a convex shape inthe paraxial region including a point Q3 and a shape in which a point P3is on the object side of the point Q3.

Further, the expression “the center has a positive power, and the edgeof the effective diameter has a weaker positive power than that of thecenter” of the object-side surface of the second lens L2 means, when apoint X3 is the edge of the effective diameter, a convex shape in theparaxial region including a point Q3 and a shape in which a point P3 ison the image side than the point Q3 and the absolute value |RX3| of theradius of curvature at a point X3 is greater than the absolute value|R3| of the radius of curvature at the point Q3.

The object-side surface of the second lens L2 may have a shape in whichthe center has a negative power and the edge of the effective diameterhas a weaker negative power than that of the center. Thereby, correctingspherical aberration and astigmatism will be facilitated.

In addition, the object-side surface of the second lens L2 may have ashape in which the center has a positive power and the edge of theeffective diameter has a stronger positive power than that of thecenter. Thereby, correcting astigmatism will be facilitated.

It is preferable for the image-side surface of the second lens L2 tohave a shape in which the center has a positive power and the edge ofthe effective diameter has a weaker positive power than that of thecenter, or a shape in which the center has a positive power and the edgeof the effective diameter has a negative power. Thereby, correctingspherical aberration and astigmatism will be facilitated.

It is preferable for at least one of the surfaces of the third lens L3to be aspherical. By configuring at least one of the surfaces of thethird lens L3 to be aspherical, correcting spherical aberration andastigmatism will be facilitated. This enables favorable resolution to beobtained. It is more preferable for both surfaces of the third lens L3to be aspherical.

It is preferable for the object-side surface of the third lens L3 to beaspherical. Thereby, correcting spherical aberration and astigmatismfavorably will be facilitated.

The object-side surface of the third lens L3 may have a shape in whichthe center has a positive power and the edge of the effective diameterhas a weaker positive power than that of the center. Thereby, correctingspherical aberration and astigmatism will be facilitated.

It is preferable for the image-side surface of the third lens L3 to beaspherical. Thereby, correcting spherical aberration favorably will befacilitated.

The image-side surface of the third lens L3 may have a shape in whichthe center has a positive power and the edge of the effective diameterhas a stronger positive power than that of the center. Thereby,correcting spherical aberration will be facilitated.

It is preferable for at least one of the surfaces of the fourth lens L4to be aspherical. By configuring at least one of the surfaces of thefourth lens L4 to be aspherical, correcting spherical aberration andfield curvature will be facilitated. This enables favorable resolutionto be obtained. It is more preferable for both surfaces of the fourthlens L4 to be aspherical.

It is preferable for the object-side surface of the fourth lens L4 tohave a shape in which the center has a negative power and the edge ofthe effective diameter has a weaker negative power than that of thecenter. Thereby, correcting spherical aberration and astigmatism will befacilitated.

It is preferable for the image-side surface of the fourth lens L4 tohave a shape in which the center has a negative power and the edge ofthe effective diameter has a stronger negative power than that of thecenter. Thereby, correcting spherical aberration and astigmatism will befacilitated.

It is preferable for at least one of the surfaces of the fifth lens L5to be aspherical. By configuring at least one of the surfaces of thefifth lens L5 to be aspherical, correcting spherical aberration andastigmatism will be facilitated. This enables favorable resolution to beobtained. It is more preferable for both surfaces of the fifth lens L5to be aspherical.

It is preferable for the object-side surface of the fifth lens L5 to beaspherical. Thereby, correcting spherical aberration and astigmatismfavorably will be facilitated.

It is preferable for the object-side surface of the fifth lens L5 tohave a shape in which the center has a negative power and the edge ofthe effective diameter has a stronger negative power than that of thecenter or a shape in which the center has a positive power and the edgeof the effective diameter has a negative power. Thereby, correctingspherical aberration will be facilitated.

The object-side surface of the fifth lens L5 may have a shape in whichthe center has a positive power and the edge of the effective diameterhas a stronger positive power than that of the center. Thereby,correcting astigmatism will be facilitated.

It is preferable for the image-side surface of the fifth lens L5 to beaspherical. Thereby, correcting spherical aberration and astigmatismfavorably will be facilitated.

The image-side surface of the fifth lens L5 may have a shape in whichthe center has a positive power and the edge of the effective diameterhas a stronger positive power than that of the center. Thereby,correcting astigmatism will be facilitated.

The image-side surface of the fifth lens L5 may have a shape in whichthe center has a positive power and the edge of the effective diameterhas a weaker positive power than that of the center. Thereby, correctingspherical aberration will be facilitated.

It is preferable for at least one of the surfaces of the seventh lens L7to be aspherical. By configuring at least one of the surfaces of theseventh lens L7 to be aspherical, correcting spherical aberration andastigmatism will be facilitated. This enables favorable resolution to beobtained. It is more preferable for both surfaces of the seventh lens L7to be aspherical.

It is preferable for the object-side surface of the seventh lens L7 tobe aspherical. Thereby, correcting spherical aberration and astigmatismfavorably will be facilitated.

The object-side surface of the seventh lens L7 may have a shape in whichthe center has a negative power and the edge of the effective diameterhas a stronger negative power than that of the center. Thereby,correcting astigmatism and comatic aberration will be facilitated.

It is preferable for the image-side surface of the seventh lens L7 to beaspherical. Thereby, correcting spherical aberration favorably will befacilitated.

The image-side surface of the seventh lens L7 may have a shape in whichthe center has a negative power and the edge of the effective diameterhas a weaker negative power than that of the center or a shape in whichthe center has a negative power and the edge of the effective diameterhas a positive power. Thereby, correcting astigmatism will befacilitated.

The image-side surface of the seventh lens L7 may have a shape in whichthe center has a planar surface or a positive power, and the edge of theeffective diameter has a stronger positive power than that of thecenter. Thereby, correcting astigmatism will be facilitated.

It is preferable for the material of the first lens L1 to be glass. Forexample, when the imaging lens is used in severe environments as vehiclemounted cameras, surveillance cameras, and the like, there is demand forthe first lens L1 disposed at the most-object side to be made of amaterial which is resistant to surface deterioration caused by wind andrain, changes in temperature due to direct sunlight, and chemical agentssuch as oil, a detergent, and the like, i.e., a material which has highwater resistance, weather resistance, acid resistance, chemicalresistance, and the like. Further, there is demand for the first lens L1to be made of a material which is hard and not likely to break.Configuring the material to be glass enables these demands to besatisfied. Alternatively, the material for the first lens L1 may be atransparent ceramic.

Note that protection means for improving the strength, scratchresistance, and chemical resistance may be provided on the object-sidesurface of the first lens L1. In such a case, the material of the firstlens L1 may be plastic. Such protection means may be a hard coat or awater-repelling coat.

In lenses for vehicle mounted cameras, for example, there is demand forthe lenses to be resistant to various impacts. Accordingly, it ispreferable for the first lens L1 to be thick, and for the centerthickness of the first lens L1 to be greater than or equal to 0.5 mm.

When used for vehicle mounted cameras, for example, lenses are requiredto be usable in a wide temperature range from ambient temperatures incold climates to temperatures in the interior of vehicles in summer inthe tropics. In order to manufacture optical systems which have goodenvironmental resistance sufficient to withstand such conditions, it ispreferable for all the lenses to be glass. When used as lenses forsurveillance cameras or for vehicle mounted cameras, there ispossibility for the imaging lens to be used under various conditionssuch as a wide temperature range from a high temperature to a lowtemperature, high humidity, and the like. In order to manufacture theoptical systems which are resistant to these conditions, it ispreferable for all the lenses to be formed of glass.

It is preferable for the materials of any one or a plurality ofarbitrary combinations of the first lens L1 through the seventh lens L7to be plastic. Configuring the materials to be plastic facilitatesreduction in the cost and the weight of the lens system and enablesaspherical surface shapes to be manufactured accurately andinexpensively, resulting in correction of spherical aberration and fieldcurvature becoming possible.

It is preferable for the imaging lens to include a plastic lens having apositive power and a plastic lens having a negative power in order tomanufacture the lens system which is resistant to changes intemperature. In general, plastic lenses have characteristics which varysignificantly due to changes in temperature, which causes focus shift tooccur. However, configuring the lens system to include the plastic lenshaving a positive power and the plastic lens having a negative powercauses changes in the power to be cancelled out, thereby enablingdeterioration in performance to be minimized.

Acrylic, a polyolefin-based material, a polycarbonate-based material, anepoxy resin, PET (Polyethylene terephthalate), PES (Poly EtherSulphone), a polycarbonate, and the like can be employed as the materialof the plastic, for example.

Note that a filter which cuts blue light from ultraviolet light or an IR(InfraRed) cutting filter which cuts infrared light may be providedbetween the lens system and the image sensor 5 according to theapplication of the imaging lens 1. A coating which has the samecharacteristics as those of the filters above may be applied onto thelens surface. Alternatively, materials which absorb ultraviolet light,blue light, infrared light, and the like may be applied as the materialsof any of the lenses.

FIG. 1 shows the example in which an optical member PP that presumesvarious types of filters, and the like is disposed between the lenssystem and the image sensor 5, but these various types of filters may bedisposed between the respective lenses, instead. Alternatively, acoating, which exhibits the same effects as the various types offilters, may be applied onto the lens surfaces of any of the lensesincluded in the imaging lens.

Note that there is a possibility that the rays which pass the exteriorof the effective diameters between the respective lenses will becomestray light and reach the image surface, resulting in turning to ghosts.Accordingly, it is preferable for a light cutting means for shieldingthe stray light to be provided as necessary. As this light cuttingmeans, an opaque paint may be applied onto portions of the outside ofthe effective diameters of the lenses, or an opaque plate may beprovided therein, for example. Alternatively, opaque plates may beprovided as the light cutting means on optical paths of the rays whichbecome stray light. Alternatively, something like a hood for shieldingstray light may be disposed more toward the object side than themost-object-side lens. FIG. 1 shows an example in which light cuttingmeans 11 is provided at the exterior of the effective diameter of theimage-side surface of the first lens L1. Note that the positions inwhich the light cutting means are provided are not limited to theexample shown in FIG. 1, and the light cutting means may be provided onother lenses or between the lenses.

Moreover, members such as a stop and the like which shields peripheralrays may be disposed between the respective lenses within a range inwhich no actual problems for the ratio of the amount of peripheral rayswill arise. The peripheral rays are rays which pass through peripheralportions of an entrance pupil in the optical system among the raysemitted from an object point outside of the optical axis Z. Disposingthe member which shields the peripheral rays in such a manner enablesimage quality of the peripheral portions of the image formation regionto be improved. Further, shielding the light which generates ghosts bythe member enables ghosts to be reduced.

Further, it is preferable for the lens system to be configured by onlyseven lenses including a first lens L1 through a seventh lens L7.

The imaging apparatus according to the present embodiment is equippedwith the imaging lens according to the present embodiment. Accordingly,the imaging apparatus can be configured in the small size, and brightand favorable images with high resolution can be obtained by using animage sensor.

Note that images captured by the imaging apparatus provided with theimaging lenses according to the first embodiment through the thirdembodiment may be displayed on mobile phones (including smart phones).For example, there is a case that the imaging apparatus provided withthe imaging lens of the present embodiment is mounted on a car as avehicle mounted camera, the vehicle mounted camera captures imagesbehind and around the car, and then the captured images are displayed ona display device. In such a case, in a car mounted with a car navigationsystem, the captured images can be displayed on the display device ofthe car navigation system. However, in the case that the car navigationsystem is not mounted on the car, a dedicated display device such as aliquid crystal display, or the like is required to be installed in thecar. However, display devices are expensive. Meanwhile, the recentmobile phones are mounted with display devices having high performancewhich enables moving pictures and web sites to be viewed. Using mobilephones as the display devices for vehicle mounted cameras eliminates thenecessity for mounting dedicated display devices on cars without carnavigation systems, resulting in enabling vehicle mounted cameras to bemounted on cars at low cost.

Here, the images captured by the vehicle mounted camera may bewire-transmitted to a mobile phone via a cable, and the like or may bewirelessly transmitted to a mobile phone via infrared communication, andthe like. Further, when the car's gear is set to reverse or a turnsignal is activated, the images captured by the vehicle mounted cameramay be automatically displayed on the display device of the mobile phoneby coordinating the operating condition of the mobile phone with that ofthe car.

Note that the display device for displaying images captured by thevehicle mounted camera is not limited to a mobile phone, and may be sucha portable data terminal as a PDA, and the like, a compact personalcomputer, or a laptop car navigation system.

Further, a mobile phone equipped with the imaging lens of the presentdisclosure may be fixed to a car to be used as a vehicle mounted camera.Recent smart phones have processing capabilities which are equivalent tothose of PC's. Accordingly, the cameras for the mobile phones can beemployed the same as vehicle mounted cameras, for example by fixing amobile phone to a dashboard, and the like in the car, and directing thecamera forward. Note that a function for recognizing white lines androad signs and giving a caution may be included as an application forthe smart phone. Further, the mobile phone may be a system whichexecutes warnings when dozing and looking-aside are found by directingthe camera towards a driver. Further, the mobile phone may be a part ofthe system that performs a steering wheel operation by coordinating withthe car. There is demand for vehicle mounted camera to be resistant tosevere environments because cars are left in high temperatureenvironments and low temperature environments. When the imaging lens ofthe present disclosure is mounted on mobile phones, the mobile phoneswill be carried with drivers out of the cars except while driving.Accordingly, the imaging lens can be made less resistant to theenvironment; thereby a vehicle mounted system can be introduced at lowcost.

[Numerical Examples of the Imaging Lens]

Next, Numerical Examples of the imaging lens of the present disclosurewill be described.

Example 1

FIG. 3 illustrates a cross-sectional view illustrating the lensconfiguration of an imaging lens of Example 1. In FIG. 3, the left sideis the object side, and the right side is the image side. An aperturestop St, an optical member PP, and an image sensor 5 disposed on animage surface Sim are also shown in the same manner as in FIG. 1. Anaperture stop St of each of the Figures does not necessarily representthe shape or size thereof, but the position thereof on the optical axisZ. Tables represents data related to the imaging lens of Example 1. InTable 1, (A) denotes basic lens data, (B) denotes various data, and (C)denotes aspherical surface data.

In basic lens data, the column of Si shows the i-th (i=1, 2, 3, . . . )surface number, the value of i sequentially increasing from theobject-side surface of the constituent element at the most object side,which is designated as 1, toward the image side. The column Ri shows theradii of curvature of the i-th surface, and the column Di shows thedistances between i-th surfaces and i+1st surfaces along the opticalaxis Z. Further, the column Ndj shows the refractive indices of j-th(j=1, 2, 3, . . . ) constituent elements with respect to the d-line(wavelength: 587.56 nm), the value of j sequentially increasing from theconstituent element at the most object side, which is designated as 1,toward the image side. The column νdj shows the Abbe numbers of j-thoptical elements with respect to the d-line.

Note that the basic lens data also shows an aperture stop St and anoptical member PP. The column of the surface number of a surfacecorresponding to the aperture stop St indicates the letters (St). Notethat the sign of the radius of curvature is positive in the case that asurface shape has a convex surface toward the object side, and negativein the case that a surface shape has a convex toward the image side.

In various data, L (in Air) is the distance (air converted lengthcorresponds to back focus) along the optical axis Z from the object-sidesurface of the first lens L1 to the image surface Sim, Bf (in Air) isthe distance (air converted length corresponds to back focus) along theoptical axis from the image-side surface of the most-image-side lens tothe image surface Sim, f is the focal length of the entire system, f1through f7 are the respective focal lengths of the first lens throughthe seventh lens L7, f12 is the combined focal length of the first lensL1 and the second lens L2, f45 is the combined focal length of thefourth lens L4 and the fifth lens L5, f123 is the combined focal lengthof the first lens L1, the second lens L2, and the third lens L3, f234 isthe combined focal length of the second lens L2, the third lens L3, andthe fourth lens L4, f345 is the combined focal length of the third lensL3, the fourth lens L4, and the fifth lens L5, f2345 is the combinedfocal length of the second lens L2, the third lens L3, the fourth lensL4, and the fifth lens L5, f3456 is the combined focal length of thethird lens L3, the fourth lens L4, the fifth lens L5, and the sixth lensL6, and f12345 is the combined focal length of the first lens L1, thesecond lens L2, the third lens L3, the fourth lens L4, and the fifthlens L5.

In the basic lens data, the mark “*” is indicated at surface numbers ofaspherical surfaces. Numerical values of paraxial radii of curvature(the radii of curvature of the center) are shown as the radii ofcurvature of aspherical surfaces. The aspherical surface data showssurface numbers of the aspherical surfaces and aspherical surfacecoefficients with respect to the aspherical surfaces. Note that “E-n”(n: integer) in each of the numerical values of the aspherical surfacecoefficients means “×10^(−n)”, and “E+n” therein means “×10^(n)”. Theaspherical surface coefficients are the values of respectivecoefficients K, RBm (m=3, 4, 5, . . . 11) in the aspherical surfaceformula below:Zd=C·h ²/{1+(1−K·C ² ·h ²)^(1/2) }+ΣRBm·h ^(m)where,Zd is the depth of an aspheric surface (the length of a perpendicularline drawn from a point on an aspheric surface with a height h to aplane perpendicular to the optical axis which contacts the peak of theaspheric surface),h is height (the distance from the optical axis to a lens surface),C is an inverse number of a paraxial radius of curvature,K, RBm is aspherical surface coefficients (m=3, 4, 5, . . . 11).

In each of Tables below, mm is used as the unit of length, but otherappropriate units may also be used, as optical systems are usable evenwhen they are proportionally enlarged or miniaturized. In addition, thenumerical values in Table 1 are rounded to a predetermined number ofdigits.

TABLE 1 Example 1 (A) Si Ri Di Ndj ν dj 1 22.5983 0.9000 1.7550 52.3 23.9407 2.2000 *3 1418.1890 2.7000 1.6889 31.1 4 −8.6283 0.2674 5 35.51703.4500 1.6180 63.3 6 −6.5413 0.2000 7(St) ∞ 0.7499 8 −7.7661 0.85271.8081 22.8 9 13.1836 0.6000 *10 −128.2980 3.0000 1.6935 53.2 *11−6.2299 0.1072 12 7.9583 3.5000 1.6180 63.3 13 −7.2032 0.9972 14 −5.34950.8502 1.6989 30.1 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.74583Image Surface ∞ (B) L(in Air) 24.15 Bf(in Air) 3.78 f 4.89 f1 −6.46 f212.46 f3 9.23 f4 −5.94 f5 9.35 f6 6.71 f7 −7.65 f12 −34.63 f45 −82.49f123 6.76 f234 13.80 f345 15.05 f2345 8.83 f3456 5.18 f12345 11.43 (C)Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 9.4054568E−04−9.6514452E−04 2.8120323E−04 −4.8998712E−04 10 1.0000000E+007.9959130E−04 −8.3031227E−04 3.7856728E−05 −5.9007147E−04 111.0000000E+00 5.3789577E−03 −8.8065545E−03 5.8275261E−03 −8.9014027E−04(C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3 1.1874261E−04 9.9267336E−05−5.1706250E−05  6.6665663E−06 0.0000000E+00 10 5.4237086E−04−1.9861960E−04  1.3536992E−05 4.2587338E−06 −4.5704597E−07  11−7.0952284E−04  2.2388477E−04 6.3404446E−05 −3.6597826E−05 4.4253374E−06

FIG. 29 are diagrams that illustrates, in order from the left of thedrawing sheet, spherical aberration, astigmatism, distortion, andlateral chromatic aberration of the imaging lens in Example 1. F in eachof spherical aberrations diagrams refers to an F value, ω in each of theother aberration diagrams refers to a half angle of view. Distortiondiagrams show the amount of displacement from an ideal image heightwhich is f×tan(φ) by using the focal length f of the entire system andan angle of view φ (which is a variable, 0≦φ≦ω). Each aberration diagramshows aberration with respect to the d-line (wavelength: 587.56 nm) asthe reference wavelength. The spherical aberration diagram also showsaberrations with respect to the F-line (wavelength: 486.13 nm), theC-line (wavelength: 656.27 nm), the s-line (wavelength: 852.11 nm), andaberration with respect to the offense against the sine condition(denoted as SNC). The lateral chromatic aberration diagram also showsaberrations with respect to the F-line, the C-line, and the s-line. Thetypes of lines in the lateral chromatic aberration diagram are the sameas those in the spherical aberration diagram. Accordingly, redundantdescriptions thereof will be omitted.

As the items in the data, the meanings thereof, and the manners in whichthey are shown, in the descriptions for Example 1 above, apply toExamples below, unless otherwise noted.

Example 2

FIG. 4 is a cross-sectional view illustrating the imaging lens ofExample 2. Table 2 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 2. FIG. 30illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 2.

TABLE 2 Example 2 (A) Si Ri Di Ndj ν dj 1 22.9171 0.8999 1.8348 42.7 23.7817 2.0863 *3 402.1602 2.7000 1.6889 31.1 4 −7.3284 0.2497 5 29.84433.4499 1.6180 63.3 6 −6.5019 0.2000 7(St) ∞ 0.7499 8 −8.6828 0.79991.8052 25.4 9 9.3477 0.6000 *10 −89.1771 2.8653 1.6935 53.2 *11 −6.65440.1072 12 7.5575 3.5000 1.6180 63.3 13 −7.2865 1.0315 14 −5.1335 0.85021.7847 26.3 15 −20.0000 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 3.07701Image Surface ∞ (B) L(in Air) 24.20 Bf(in Air) 4.11 f 4.89 f1 −5.54 f210.48 f3 8.96 f4 −5.48 f5 10.22 f6 6.60 f7 −9.03 f12 −42.40 f45 −26.52f123 6.05 f234 10.97 f345 19.34 f2345 8.48 f3456 5.45 f12345 14.58 (C)Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 2.3066340E−03−2.7796590E−03 1.1546321E−03 −5.9238900E−04 10 1.0000000E+00−9.4583077E−05   7.1009942E−04 −4.1812964E−04  −6.5397848E−04 111.0000000E+00 5.5794377E−03 −9.5264121E−03 6.5158329E−03 −1.1461634E−03(C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3 7.4730944E−05 1.0249124E−04−4.8055549E−05  6.3602745E−06 0.0000000E+00 10 6.1447509E−04−1.9617303E−04  5.8341263E−06 3.9869439E−06 −1.9528722E−07  11−7.1763112E−04  2.4245511E−04 6.5090033E−05 −3.9128704E−05 4.7994810E−06

Example 3

FIG. 5 is a cross-sectional view illustrating the imaging lens inExample 3. Table 3 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 3. FIG. 31illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 3.

TABLE 3 Example 3 (A) Si Ri Di Ndj ν dj 1 21.4885 0.9000 1.7725 49.6 24.2150 2.2000 *3 57.7016 3.0624 1.6889 31.1 4 −10.9634 0.3001 5 36.94903.4767 1.6180 63.3 6 −7.1861 0.2000 7(St) ∞ 0.7499 8 −10.0009 1.00001.8052 25.4 9 12.9243 0.6000 *10 −422.9977 3.0001 1.6935 53.2 *11−5.9633 0.1072 12 7.0131 3.5000 1.6180 63.3 13 −7.4273 0.8800 14 −5.71430.9001 1.7847 26.3 15 20.0000 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.09800 Image Surface ∞ (B) L(in Air) 24.00 Bf(in Air) 3.13 f 4.82 f1−6.95 f2 13.62 f3 10.04 f4 −6.87 f5 8.70 f6 6.43 f7 −5.58 f12 −31.02 f4568.63 f123 7.86 f234 14.15 f345 12.34 f2345 8.66 f3456 4.84 f12345 9.24(C) Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 3.9174131E−03−3.6453651E−03 1.3998443E−03 −5.8434217E−04 10 1.0000000E+00−9.1930626E−04   2.6210642E−04 −5.1547775E−04  −7.1766130E−04 111.0000000E+00 6.0059266E−03 −1.0130481E−02 6.8629110E−03 −1.2178260E−03(C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3 7.0852888E−05 9.9541709E−05−4.7335262E−05  6.0476550E−06 0.0000000E+00 10 6.0961095E−04−1.8934937E−04  8.5566180E−06 3.5780252E−06 −1.8091868E−07  11−7.3636161E−04  2.4605836E−04 6.7182256E−05 −3.8997464E−05 4.6757708E−06

Example 4

FIG. 6 is a cross-sectional view illustrating the imaging lens inExample 4. Table 4 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 6. FIG. 32illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 4.

TABLE 4 Example 4 (A) Si Ri Di Ndj ν dj 1 19.5671 0.7999 1.7725 49.6 23.9995 2.2000 *3 −64.5178 2.7000 1.9229 20.9 4 −9.6381 0.2497 5 30.86173.5500 1.6180 63.3 6 −7.0917 0.2000 7(St) ∞ 0.7496 8 −10.5844 0.80001.9229 18.9 9 10.8471 0.6000 *10 −82.7195 3.0000 1.8061 40.9 *11 −7.00890.1072 12 7.6129 3.6000 1.6180 63.3 13 −7.6128 0.8502 14 −5.4925 0.89991.6034 38.0 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.80562 ImageSurface ∞ (B) L(in Air) 24.14 Bf(in Air) 3.84 f 4.91 f1 −6.66 f2 11.99f3 9.68 f4 −5.70 f5 9.33 f6 6.77 f7 −9.10 f12 −48.56 f45 −51.10 f1236.94 f234 14.35 f345 17.16 f2345 8.92 f3456 5.31 f12345 12.93 (C)Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 −1.3702487E−057.9431611E−04 −1.1899369E−03 2.1183448E−04 10 1.0000000E+00−1.6560060E−03 4.7231665E−03 −4.9882551E−03 1.5846179E−03 111.0000000E+00  2.1959441E−03 −2.9599396E−03   1.1861529E−035.2111461E−04 (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3 4.6400135E−076.5081839E−05 −3.5556830E−05  4.9959536E−06 0.0000000E+00 106.2284621E−04 −4.9028670E−04  2.0449961E−05 4.1227663E−05−7.6257982E−06  11 −5.6640934E−04  9.3984370E−05 4.5098336E−05−1.9218804E−05  2.0741270E−06

Example 5

FIG. 7 is a cross-sectional view illustrating the imaging lens inExample 5. Table 5 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 5. FIG. 33illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 5.

TABLE 5 Example 5 (A) Si Ri Di Ndj ν dj 1 19.8808 0.7999 1.7725 49.6 23.9724 2.1179 *3 −133.6526 2.7000 1.9229 20.9 4 −10.1653 0.2497 533.3742 3.5500 1.6180 63.3 6 −6.8191 0.2000 7(St) ∞ 0.7499 8 −9.03340.9781 1.9229 18.9 9 12.9643 0.6000 *10 −132.8394 3.0000 1.8061 40.9 *11−6.8855 0.1072 12 7.7158 3.6000 1.6180 63.3 13 −7.7157 0.8801 14 −5.53360.8999 1.6364 34.5 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.64988Image Surface ∞ (B) L(in Air) 24.11 Bf(in Air) 3.68 f 4.89 f1 −6.57 f211.80 f3 9.48 f4 −5.65 f5 8.91 f6 6.85 f7 −8.69 f12 −45.04 f45 −78.83f123 6.93 f234 13.82 f345 15.68 f2345 8.75 f3456 5.24 f12345 11.83 (C)Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 −1.1804103E−03  2.2329945E−03 −1.9711382E−03  4.4551577E−04 10 1.0000000E+008.5939603E−03 −1.5550297E−02 1.2774164E−02 −4.2858468E−03  111.0000000E+00 4.5990284E−03 −4.1208461E−03 6.7832681E−04 1.1147068E−03(C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3 −1.9615356E−05 5.5820916E−05−3.1854677E−05   4.5271047E−06 0.0000000E+00 10 −2.7637656E−043.2480745E−04 1.2564231E−04 −8.8036521E−05 1.2375992E−05 11−6.6155419E−04 5.3336356E−05 5.4826563E−05 −1.7612302E−05 1.6483969E−06

Example 6

FIG. 8 is a cross-sectional view illustrating the imaging lens inExample 6. Table 6 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 6. FIG. 34illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 6.

TABLE 6 Example 6 (A) Si Ri Di Ndj ν dj 1 21.1263 1.2289 1.8830 40.8 23.9064 1.8493 *3 −268.5800 2.6042 1.9229 20.9 *4 −11.0433 0.2496 511.8210 3.7999 1.6180 63.3 6 −6.2233 0.2000 7(St) ∞ 0.6999 8 −16.95500.8926 1.9229 18.9 9 8.1639 0.7000 *10 −18.5875 3.0000 1.8061 40.9 *11−6.6535 0.1072 12 6.8502 3.1999 1.6180 63.3 13 −6.5074 0.8866 14 −4.82720.8502 1.6727 32.1 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.20460Image Surface ∞ (B) L(in Air) 23.50 Bf(in Air) 3.23 f 4.86 f1 −5.62 f212.42 f3 7.17 f4 −5.87 f5 11.56 f6 5.94 f7 −7.18 f12 −18.84 f45 −27.00f123 5.65 f234 8.00 f345 13.36 f2345 7.80 f3456 5.58 f12345 12.35 (C)Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 5.5611665E−04−2.8957254E−04  2.1546567E−04 2.7371811E−05 4 1.0000000E+00−1.0796015E−03   1.7780246E−03 −4.4918250E−04 2.3098774E−06 101.0000000E+00 1.9644312E−05 −1.0102628E−03 −1.7192549E−04−3.2566683E−05  11 1.0000000E+00 1.8514892E−03 −2.0314541E−03 5.2764382E−04 4.9695790E−05 (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3 6.8076988E−07 −6.0812828E−07 −1.7060354E−07  1.3310841E−076.9530754E−08 4  3.6813847E−05  7.3016410E−06 −2.1671133E−06−1.1849490E−06 3.4143351E−07 10 −1.3779002E−05 −9.4373256E−06−5.6345639E−06 −1.1508838E−06 9.5053859E−07 11 −2.6460249E−05−1.0426289E−05 −1.4972542E−06  3.9088980E−07 3.4510843E−07

Example 7

FIG. 9 is a cross-sectional view illustrating the imaging lens inExample 7. Table 7 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 7. FIG. 35illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 7.

TABLE 7 Example 7 (A) Si Ri Di Ndj ν dj 1 14.2002 0.8000 1.7550 52.3 23.6961 1.9000 *3 55.0693 2.2229 1.6889 31.1 4 −12.7671 0.3000 5 29.97513.8589 1.6180 63.3 6 −6.0355 0.2000 7(St) ∞ 0.7499 8 −6.4492 1.00001.7847 26.3 9 15.1017 0.6000 *10 200.2246 2.6815 1.6935 53.2 *11 −6.06450.1072 12 6.6032 3.4000 1.6180 63.3 13 −7.3535 1.0969 14 −4.9733 0.85021.7847 26.3 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.24085 ImageSurface ∞ (B) L(in Air) 23.04 Bf(in Air) 3.27 f 4.85 f1 −6.84 f2 15.25f3 8.48 f4 −5.64 f5 8.53 f6 6.21 f7 −6.34 f12 −18.67 f45 −134.08 f1237.72 f234 16.43 f345 13.01 f2345 9.04 f3456 4.89 f12345 12.34 (C)Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 9.8386231E−03−1.8422509E−02 1.7331268E−02 −8.4402051E−03 10 1.0000000E+00−1.9755946E−03   2.4058701E−03 −2.7371272E−03   1.1100397E−03 111.0000000E+00 5.4668551E−03 −8.6913399E−03 6.2846647E−03 −1.9831987E−03(C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3  1.4935082E−03 3.3546519E−04−1.7887601E−04   2.0744780E−05 0.0000000E+00 10 −2.1077791E−04−3.5893960E−05  3.2091205E−05 −1.4897266E−05 2.8050963E−06 11−5.4269565E−05 1.4801958E−04 6.5276760E−06 −1.7042864E−05 2.7217627E−06

Example 8

FIG. 10 is a cross-sectional view illustrating the imaging lens inExample 8. Table 8 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 8. FIG. 36illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 8.

TABLE 8 Example 8 (A) Si Ri Di Ndj ν dj 1 21.6205 0.8000 1.7725 49.6 23.4800 1.8847 *3 43.5111 2.5000 1.9229 20.9 *4 −14.9446 0.2999 5 13.54523.4985 1.6180 63.3 6 −5.3399 0.2000 7(St) ∞ 0.6999 8 −34.4208 0.80011.9229 18.9 9 6.5967 0.8000 *10 107.1736 2.4033 1.8061 40.9 *11 −9.19850.1072 12 6.1084 3.0002 1.6180 63.3 13 −21.7654 0.8502 14 −7.0720 0.85021.6009 41.4 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 1.86174 ImageSurface ∞ (B) L(in Air) 21.59 Bf(in Air) 2.89 f 5.00 f1 −5.47 f2 12.31f3 6.67 f4 −5.94 f5 10.61 f6 8.05 f7 −11.77 f12 −16.64 f45 −24.61 f1235.35 f234 7.61 f345 10.97 f2345 6.87 f3456 6.06 f12345 10.27 (C) SurfaceNumbers K RB3 RB4 RB5 RB6 3 1.0000000E+00 1.5242656E−03 −1.0323877E−033.2907309E−04 8.8852663E−05 4 1.0000000E+00 4.7997895E−05  8.8354584E−047.3719851E−05 4.1638268E−05 10 1.0000000E+00 −1.1988165E−03  4.2757601E−04 3.4279676E−04 −1.0844808E−04  11 1.0000000E+005.4218772E−06 −1.1359882E−04 −1.2913814E−04  2.6333776E−05 (C) SurfaceNumbers RB7 RB8 RB9 RB10 RB11 3 2.7655784E−06 −4.5098642E−06−1.0725530E−06  2.0841163E−07 1.3587618E−07 4 1.1831154E−05 9.0017482E−07 −5.9575796E−07 −9.5954288E−08 2.0347678E−07 10−5.0576480E−05  −7.0384156E−07  6.1033321E−06  6.9684092E−07−6.4881703E−07  11 8.1017686E−06 −2.3128659E−06 −1.8265052E−06−4.3161481E−07 1.6922208E−07

Example 9

FIG. 11 is a cross-sectional view illustrating the imaging lens inExample 9. Table 9 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 9. FIG. 37illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 9.

TABLE 9 Example 9 (A) Si Ri Di Ndj ν dj 1 −18.8092 0.8001 1.5891 61.1 24.5276 1.4999 3 20.9792 2.1998 1.9037 31.3 4 −14.4218 0.2496 5 8.89462.4999 1.6180 63.3 6 −14.9806 0.2000 7(St) ∞ 0.7000 8 −12.0425 0.79991.9229 18.9 9 9.1585 0.5000 10 −60.0000 2.3999 1.9037 31.3 11 −6.68460.1072 12 6.1427 3.0003 1.6180 63.3 13 −8.9981 0.8502 14 −6.9016 0.85021.7847 26.3 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 1.89703 ImageSurface ∞ (B) L(in Air) 19.58 Bf(in Air) 2.93 f 5.06 f1 −6.12 f2 9.75 f39.41 f4 −5.54 f5 8.15 f6 6.39 f7 −8.80 f12 −44.93 f45 −82.31 f123 7.86f234 8.80 f345 14.29 f2345 7.16 f3456 5.18 f12345 12.31

Example 10

FIG. 12 is a cross-sectional view illustrating the imaging lens inExample 10. Table 10 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 10. FIG.38 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 10.

TABLE 10 Example 10 (A) Si Ri Di Ndj ν dj 1 −20.8811 0.7999 1.5891 61.12 5.0328 1.4999 3 76.2125 2.1998 1.9229 18.9 4 −15.7371 0.2496 5 5.53232.1999 1.6180 63.3 6 −13.2582 0.2000 7(St) ∞ 0.7001 8 −6.6598 0.79991.9229 18.9 9 8.7959 0.5000 10 0.0000 2.5995 1.9037 31.3 11 −5.99200.1072 12 6.3803 3.0002 1.6180 63.3 13 −20.8543 0.8502 14 −11.99790.8502 1.7847 26.3 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 1.96081Image Surface ∞ (B) L(in Air) 19.55 Bf(in Air) 2.99 f 5.07 f1 −6.81 f214.30 f3 6.61 f4 −4.01 f5 6.63 f6 8.25 f7 −15.29 f12 −19.71 f45 −50.43f123 6.10 f234 11.42 f345 11.13 f2345 7.40 f3456 5.82 f12345 11.02

Example 11

FIG. 13 is a cross-sectional view illustrating the imaging lens inExample 11. Table 11 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 11. FIG.39 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 11.

TABLE 11 Example 11 (A) Si Ri Di Ndj ν dj 1 21.5001 0.8169 1.7550 52.3 23.7724 1.5000 3 15.2531 2.1998 1.8830 40.8 4 −39.2280 0.2497 5 8.59622.0854 1.6180 63.3 6 −34.8086 0.2000 7(St) ∞ 0.7498 8 −80.2577 0.88761.9229 18.9 9 8.5810 0.5000 10 −101.4073 2.5995 1.9037 31.3 11 −6.96010.1072 12 5.7660 3.0003 1.6180 63.3 13 −11.2633 1.2264 14 −6.8653 0.85031.9591 17.5 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 1.57427 ImageSurface ∞ (B) L(in Air) 19.58 Bf(in Air) 2.60 f 4.98 f1 −6.18 f2 12.68f3 11.36 f4 −8.36 f5 8.16 f6 6.62 f7 −7.16 f12 −16.46 f45 31.18 f12316.89 f234 10.40 f345 10.90 f2345 7.39 f3456 4.92 f12345 11.92

Example 12

FIG. 14 is a cross-sectional view illustrating the imaging lens inExample 12. Table 12 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 12, FIG.40 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 12.

TABLE 12 Example 12 (A) Si Ri Di Ndj ν dj 1 12.8270 1.8001 1.7725 49.6 23.2892 1.5668 3 9.4889 2.1997 1.9200 25.8 4 −140.6338 0.3001 5 11.42192.1203 1.6180 63.3 6 −7.7654 0.0000 7(St) ∞ 0.3002 8 −10.0879 1.14961.9229 18.9 9 9.8635 0.4692 10 0.0000 2.5996 1.9200 29.8 11 −6.31650.1072 12 5.9212 3.0002 1.6180 63.3 13 −21.2195 0.9380 14 −10.35400.8502 1.9591 17.5 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 1.57462Image Surface ∞ (B) L(in Air) 20.01 Bf(in Air) 2.60 f 4.97 f1 −6.24 f29.73 f3 7.81 f4 −5.26 f5 6.87 f6 7.82 f7 −9.24 f12 −27.19 f45 71.67 f1237.85 f234 10.13 f345 9.94 f2345 6.78 f3456 4.72 f12345 9.61

Example 13

FIG. 15 is a cross-sectional view illustrating the imaging lens inExample 13. Table 13 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 13. FIG.41 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 13.

TABLE 13 Example 13 (A) Si Ri Di Ndj ν dj 1 19.0767 0.9000 1.58913 61.12 3.8767 2.8000 3 −14.9165 3.5000 1.90366 31.3 4 −7.9821 0.3000 *58.9319 2.4719 1.53158 55.5 *6 −19.4733 0.2000 7(St) ∞ 0.7121 *8 −5.60920.8000 1.63350 23.6 *9 10.7264 0.6000 *10 14.1265 2.8000 1.53158 55.5*11 −7.6775 0.1072 12 6.2949 3.7500 1.58913 61.1 13 −10.7190 0.8799 *14−9.3658 0.8503 1.63350 23.6 15 ∞ 0.7000 16 ∞ 0.5000 1.51680 64.2 17 ∞2.6497 Image Surface ∞ (B) L(in Air) 24.35 Bf(in Air) 3.68 f 4.85 f1−8.44 f2 15.33 f3 11.88 f4 −5.71 f5 9.79 f6 7.33 f7 −14.78 f12 −124.29f45 −28.91 f123 7.47 f234 34.62 f345 26.64 f2345 10.46 f3456 6.38 f1234517.75 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 −6.5750340E−01 −8.9495999E−04 −8.2737678E−05 −6.5386728E−06 −1.8140859E−07 63.3927014E+01  2.1528879E−03 −6.0881532E−04  1.9726718E−05 3.3610736E−07 8 −1.2589367E+01   4.1122567E−03 −4.1957196E−04 3.6683667E−06  1.3058744E−06 9 0.0000000E+00 −9.2852680E−04 5.9106420E−04 −1.3505197E−05 −1.6490412E−08 10 1.0000000E+00−1.1118621E−02  1.1534105E−03 −5.3518559E−05  1.9124729E−06 112.2998481E+00 −8.5075838E−04 −2.4305063E−05  6.8191949E−06−3.9498819E−07 14 7.0406344E+00 −7.6940529E−04  5.8959430E−05−1.6600756E−07 −1.8870815E−07 (C) Surface Numbers RB7 RB8 RB9 RB10 RB115 1.0412275E−08  2.0288337E−09  6.3022772E−10 −7.1532671E−118.3743476E−13 6 9.4026874E−08  1.0770156E−08 −1.5882368E−09−3.9092328E−11 4.8933968E−12 8 8.2926735E−08 −2.4691888E−08−1.0241661E−09  6.0802052E−10 −4.6108927E−11  9 −6.5279093E−08 −7.9294268E−09  1.4589556E−09  1.1576128E−10 −1.6068907E−11  10−3.2670440E−08  −3.9115857E−11 −1.3707878E−10  1.5049943E−10−8.9208625E−13  11 −2.2528855E−09  −8.9173614E−10 −5.5444904E−11−4.1476137E−12 1.2251155E−12 14 7.6746246E−08  1.5664395E−08−3.2512148E−09 −2.0391678E−11 1.8844967E−11

Example 14

FIG. 16 is a cross-sectional view illustrating the imaging lens inExample 14. Table 14 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 14. FIG.42 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 14.

TABLE 14 Example 14 (A) Si Ri Di Ndj ν dj 1 24.6820 0.9000 1.5891 61.1 23.9538 2.8000 3 −13.7354 3.5000 1.9037 31.3 4 −7.7227 0.3000 *5 9.30002.3656 1.5316 55.5 *6 −16.0593 0.2000 7(St) ∞ 0.7000 *8 −6.7169 0.80001.6335 23.6 *9 9.0604 0.6000 *10 13.4560 2.8000 1.5316 55.5 *11 −8.31930.1072 12 6.4814 3.7500 1.5891 61.1 13 −10.8936 0.8800 *14 −9.29380.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.58794Image Surface ∞ (B) L(in Air) 24.17 Bf(in Air) 3.62 f 4.83 f1 −8.12 f215.30 f3 11.45 f4 −5.97 f5 10.12 f6 7.50 f7 −14.67 f12 −104.15 f45−28.88 f123 7.08 f234 27.59 f345 24.18 f2345 9.92 f3456 6.51 f1234515.86 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 −2.2328258E−01 −1.1777139E−03 −5.8035674E−05 −8.3419155E−06 −1.4191306E−07  61.8570847E+01  2.5769746E−03 −4.5458818E−04  5.3581057E−06 3.5571305E−078 −1.5874785E+01   5.2018291E−03 −3.6889772E−04 −2.9720629E−061.4616830E−06 9 0.0000000E+00 −1.3193175E−04  6.1057877E−04−7.1968467E−06 1.3967600E−07 10 1.0000000E+00 −8.3634504E−03 9.4907494E−04 −2.4501313E−05 9.6814795E−07 11 −1.3045935E+01 −3.8039804E−03  1.5372661E−04 −6.6093719E−06 −1.3881925E−08  146.7128090E+00 −9.0642752E−04 −1.2290007E−05  4.4523987E−06−2.8630636E−07  (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 54.6906167E−09 1.7609689E−09  6.6249877E−10 −6.3471392E−11 9.7534675E−136 9.3070408E−08 1.0824210E−08 −1.5700239E−09 −3.2497655E−115.1772793E−12 8 9.3806375E−08 −2.4603117E−08  −1.1229490E−09 5.6732402E−10 −4.0217034E−11  9 −4.3777530E−08  −7.3856269E−09  1.5278744E−09  1.5836154E−10 −3.2571115E−11  10 −2.5559814E−08 6.6782100E−10  2.7324032E−11  1.0155090E−10 −1.7384098E−12  11−3.7096749E−09  −1.0553584E−09  −5.9068872E−11 −3.0957111E−121.3333855E−12 14 7.3852015E−08 1.5028620E−08 −3.3080073E−09−9.9541232E−12 1.8902135E−11

Example 15

FIG. 17 is a cross-sectional view illustrating the imaging lens inExample 15. Table 15 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 15. FIG.43 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 15.

TABLE 15 Example 15 (A) Si Ri Di Ndj ν dj 1 23.2458 1.1960 1.5891 61.1 23.6265 2.5171 3 −14.5774 3.5001 1.9037 31.3 4 −7.5244 0.2910 *5 12.78332.7000 1.5316 55.5 *6 −9.6384 0.2000 7(St) ∞ 0.7499 *8 −6.9710 0.80001.6335 23.6 *9 8.4963 0.6000 *10 20.5762 3.0000 1.5316 55.5 *11 −8.49780.1072 12 6.6165 3.8500 1.5891 61.1 13 −9.8612 0.9829 *14 −11.80910.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 1.00000 1.5168 64.2 17 ∞ 2.29905Image Surface ∞ (B) L(in Air) 25.00 Bf(in Air) 3.66 f 4.70 f1 −7.46 f213.93 f3 10.79 f4 −5.93 f5 11.73 f6 7.36 f7 −18.64 f12 −102.29 f45−19.83 f123 6.65 f234 20.30 f345 30.09 f2345 10.14 f3456 6.64 f1234520.58 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 7.2952173E−01−7.4813348E−04 −1.8441405E−05 2.0277048E−06 −8.5396369E−09  64.9312325E+00  2.6939532E−03 −3.4683428E−04 1.6177263E−05 5.3960643E−078 −1.6929009E+01   2.8278310E−03 −3.7452085E−04 1.1131976E−051.4440040E−06 9 0.0000000E+00  7.4775026E−04  5.2796034E−04−7.5035440E−06  2.1662263E−07 10 1.0000000E+00 −5.6135718E−03 9.8694499E−04 −3.4444714E−05  8.1726060E−07 11 −1.2813847E+00 −1.2993216E−03 −2.3926381E−05 1.2266901E−06 −1.5497796E−07  141.1504193E+01 −1.9206224E−03 −4.9332286E−05 4.4667401E−06−4.2602970E−07  (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 52.3880255E−09 1.6319156E−09  7.8269198E−10 −4.5375066E−11 −1.4529089E−12 6 1.0287882E−07 9.7803019E−09 −1.7574842E−09−7.4886527E−11   1.1617299E−11 8 9.3498955E−08 −2.3125675E−08 −8.9450205E−10 5.0833882E−10 −4.1311169E−11 9 −2.8519482E−08 −7.7133392E−09   5.6755554E−10 4.5600060E−11 −1.4639276E−11 10−2.7151055E−08  5.4528596E−10 −1.7980896E−11 9.0843384E−11−2.4286307E−12 11 −3.2993532E−09  −1.0009943E−09  −5.0123124E−11−2.2792376E−12   1.3811504E−12 14 4.0393414E−08 1.5241597E−08−2.2766319E−09 4.3260163E−11  4.6815290E−12

Example 16

FIG. 18 is a cross-sectional view illustrating the imaging lens inExample 16. Table 16 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 16. FIG.44 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 16.

TABLE 16 Example 16 (A) Si Ri Di Ndj ν dj 1 23.0030 0.9000 1.5891 61.1 23.9455 2.8000 3 −11.8641 3.5000 1.9037 31.3 4 −6.5817 0.3000 *5 16.95752.7000 1.5316 55.5 *6 −10.4760 0.2000 7(St) ∞ 0.7000 *8 −6.1023 0.80001.6335 23.6 *9 9.3048 0.6000 *10 9.3932 2.8000 1.5316 55.5 *11 −8.08690.1072 12 8.3763 3.7500 1.5891 61.1 13 −10.8731 0.8800 *14 −10.76200.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.64752Image Surface ∞ (B) L(in Air) 24.56 Bf(in Air) 3.68 f 4.88 f1 −8.23 f212.44 f3 12.61 f4 −5.70 f5 8.66 f6 8.66 f7 −16.99 f12 63.77 f45 −48.24f123 6.60 f234 30.75 f345 22.82 f2345 9.06 f3456 6.75 f12345 11.39 (C)Surface Numbers K RB3 RB4 RB5 RB6 5 −1.1138382E+00  −3.4769930E−03−1.4223212E−04 −1.0581360E−05 −8.1360916E−08  6 8.7954059E+00−1.5265484E−03 −2.0468882E−04  7.3822399E−06 3.7821209E−07 8−1.3920021E+01   4.2721162E−03 −2.7483897E−04  2.0464966E−061.2031986E−06 9 0.0000000E+00  1.2173078E−03  5.0751214E−04−1.1298208E−05 −1.0993132E−07  10 1.0000000E+00 −8.7145767E−03 9.5934935E−04 −2.9885231E−05 1.2852898E−06 11 −1.3477239E+01 −3.6226975E−03  1.5953523E−04 −3.5700242E−06 4.4833332E−08 141.1103399E+01  7.3743944E−04 −1.2354179E−06  6.8254553E−06−1.9811870E−07  (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 5−1.4896773E−12  6.4283816E−10  5.7828276E−10 −3.9650081E−11−1.2631232E−12 6 9.2017008E−08 9.4621626E−09 −1.8408636E−09−5.9800502E−11  1.0248657E−11 8 5.9632645E−08 −2.6120073E−08 −6.9128631E−10  5.5257486E−10 −3.7507223E−11 9 −5.3080984E−08 −7.8956020E−09   1.4928516E−09 −6.2921663E−11 −3.5989278E−12 10−2.0799345E−08  1.5627358E−09 −4.0966708E−11  5.5290144E−11−7.0592798E−12 11 9.1264588E−10 −7.9172033E−10  −1.7983636E−11−1.0863930E−11  1.8617632E−12 14 8.7061914E−08 1.5870960E−08−3.2366490E−09 −2.4725942E−11  2.1052658E−11

Example 17

FIG. 19 is a cross-sectional view illustrating the imaging lens inExample 17. Table 17 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 17. FIG.45 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 17.

TABLE 17 Example 17 (A) Si Ri Di Ndj ν dj 1 23.0007 1.0546 1.5891 61.1 23.9005 2.5843 3 −15.0634 3.4999 1.9037 31.3 4 −8.7725 0.3000 *5 17.29572.7000 1.5316 55.5 *6 −11.8924 0.2000 7(St) ∞ 0.7498 *8 −5.0235 1.00001.6335 23.6 *9 −16.8231 0.5900 *10 −267.0415 2.9925 1.5316 55.5 *11−8.1372 0.1072 12 6.5086 3.7500 1.5891 61.1 13 −8.0207 0.9221 *14−5.5998 0.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.68161 Image Surface ∞ (B) L(in Air) 25.01 Bf(in Air) 3.71 f 4.76 f1−8.14 f2 18.39 f3 13.70 f4 −11.69 f5 15.73 f6 6.74 f7 −8.84 f12 −34.64f45 −342.98 f123 10.42 f234 17.48 f345 18.47 f2345 10.15 f3456 5.58f12345 14.28 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 1.0173158E+00−7.7815906E−04  3.3528541E−06 −3.7284573E−06 −4.7668574E−08  61.2266417E+00 −1.3664459E−04 −1.0152890E−04 −6.9566100E−08 4.5165240E−078 −1.1334246E+00   6.9612534E−03 −3.6910213E−04  9.4549523E−061.3840763E−06 9 0.0000000E+00  8.5746123E−03  2.3014450E−04 1.4986405E−06 2.9270849E−07 10 1.0000000E+00  1.8854236E−03 3.2935680E−04 −1.6818575E−05 −4.8799350E−07  11 −2.3343205E−01 −6.1902814E−04 −5.8954493E−05 −7.5472047E−07 6.2055094E−09 14−1.1880740E+00  −4.1569538E−03 −5.3601859E−05 −2.1009250E−06−4.8914875E−07  (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 52.1446197E−09 1.4207732E−09  7.3117295E−10 −4.9543863E−11 −6.5135012E−136 9.7363078E−08 9.1861669E−09 −1.6573302E−09 −7.8632128E−11 9.3857461E−12 8 9.6156655E−08 −2.2341728E−08  −1.0712261E−09 4.7216424E−10 −4.2953847E−11 9 −2.8393121E−08  −9.1585147E−09  2.4187792E−10 −1.6925774E−11 −8.1139623E−12 10 −2.5404792E−08 8.9026158E−10 −4.4499197E−11  7.6347764E−11 −2.2926178E−12 11−2.4272251E−09  −9.5535688E−10  −4.5057366E−11 −1.8450392E−12 1.2968772E−12 14 5.7117921E−08 2.1857391E−08 −2.5727061E−09 8.5982306E−11 −6.1070801E−13

Example 18

FIG. 20 is a cross-sectional view illustrating the imaging lens inExample 18. Table 18 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 18. FIG.46 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 18.

TABLE 18 Example 18 (A) Si Ri Di Ndj ν dj 1 23.0101 0.9000 1.5891 61.1 23.8928 2.8000 3 −32.6406 3.5000 1.9037 31.3 4 −12.0010 0.3000 *5 13.50212.0000 1.5316 55.5 *6 −19.5434 0.2000 7(St) ∞ 0.7499 *8 −7.3027 1.00001.6335 23.6 *9 932.6397 0.6000 *10 −88.0895 2.8000 1.5316 55.5 *11−6.9260 0.1072 12 5.7834 3.8224 1.5891 61.1 13 −8.4157 0.8800 *14−4.9164 0.8503 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.78448 Image Surface ∞ (B) L(in Air) 24.32 Bf(in Air) 3.81 f 4.88 f1−8.09 f2 19.44 f3 15.34 f4 −11.43 f5 13.97 f6 6.46 f7 −7.76 f12 −26.36f45 254.59 f123 14.26 f234 21.35 f345 18.56 f2345 10.67 f3456 5.31f12345 16.59 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 1.0000191E+00−5.3929568E−04 −4.8003271E−06 −2.3129330E−06 −3.1395129E−08 61.2314022E+00 −5.1599618E−04 −1.4241048E−04  1.4964013E−06 4.5038888E−07 8 1.0424656E−01  3.8092916E−03 −3.0717207E−04 1.0097921E−05  1.3862460E−06 9 0.0000000E+00  5.1974965E−03 2.5896987E−04  1.7040731E−06  3.0740978E−07 10 1.0000000E+00 1.6388690E−03  3.7618132E−04 −1.9271569E−05 −6.0763124E−07 11−2.0213197E−01  −6.7130128E−04 −1.4394891E−05 −4.1454595E−06−3.9507558E−08 14 −2.9781838E+00  −5.7381676E−03  6.0351652E−05−7.0558944E−07 −4.0513488E−07 (C) Surface Numbers RB7 RB8 RB9 RB10 RB115 3.0143802E−09 1.3747862E−09  6.9637809E−10 −5.0255229E−11−2.6726581E−13 6 9.5286771E−08 8.9328604E−09 −1.6470330E−09−7.2005170E−11  9.8925896E−12 8 9.6808818E−08 −2.2174664E−08 −1.0545713E−09  4.7715814E−10 −4.2828236E−11 9 −2.6007116E−08 −8.9270693E−09   2.2729822E−10 −1.7260353E−11 −8.2228860E−12 10−2.5104605E−08  9.3004700E−10 −4.3928130E−11  7.6645482E−11−2.4700539E−12 11 −2.6740996E−09  −9.8058460E−10  −4.6056212E−11−1.7198932E−12  1.3199752E−12 14 5.9318259E−08 2.0517587E−08−2.7109014E−09  6.5287256E−11  4.3013196E−12

Example 19

FIG. 21 is a cross-sectional view illustrating the imaging lens inExample 19. Table 19 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 19. FIG.47 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 19.

TABLE 19 Example 19 (A) Si Ri Di Ndj ν dj 1 23.0106 0.9000 1.5891 61.1 23.8293 2.8000 3 −31.0317 3.5000 1.9037 31.3 4 −12.1936 0.3000 *5 14.48312.1040 1.5316 55.5 *6 −26.9416 0.2000 7(St) ∞ 0.7482 *8 −7.9475 0.80001.6335 23.6 *9 −220.9192 0.7558 *10 −83.0874 2.8242 1.5316 55.5 *11−7.8131 0.2000 12 5.8685 4.2097 1.6180 63.3 13 −9.0197 0.8800 *14−5.3751 0.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.97983 Image Surface ∞ (B) L(in Air) 25.08 Bf(in Air) 4.01 f 4.85 f1−7.94 f2 20.43 f3 18.04 f4 −13.03 f5 16.01 f6 6.45 f7 −8.48 f12 −23.08f45 716.40 f123 20.17 f234 23.70 f345 22.05 f2345 11.78 f3456 5.46f12345 24.00 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 6.5806721E−01−6.3771972E−04 1.6370081E−05 −4.9800689E−06  −8.9123527E−08 61.2006027E+01 −1.6809586E−03 −1.2042583E−04  6.5197806E−07 5.0089674E−07 8 9.6087773E−02  3.1892472E−03 −2.4001475E−04 1.1192829E−05  1.4996040E−06 9 0.0000000E+00  5.9919630E−032.2543612E−04 2.9253843E−06  3.0057103E−07 10 1.0000000E+00 2.2021407E−03 2.6421130E−04 −1.4711465E−05  −4.6989346E−07 11−1.9765591E−01  −3.5815697E−04 −2.8087034E−05  −1.9644925E−06 −3.3923381E−08 14 −2.8533121E+00  −5.1801690E−03 2.4709447E−068.6041312E−07 −5.0521540E−07 (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 55.8900880E−09 2.9859060E−09  8.4762777E−10 −8.0185639E−11 5.5869260E−136 1.1268365E−07 1.1598765E−08 −1.4973251E−09 −1.0384910E−108.0636783E−12 8 1.0928062E−07 −2.0792985E−08  −9.5516315E−10 3.9620399E−10 −3.9449301E−11  9 −2.6859917E−08  −8.5355490E−09  3.7621402E−10 −6.6118151E−11 −3.7319154E−12  10 −2.5092125E−08 8.2799824E−10 −7.1905854E−11  6.8388529E−11 −1.6432139E−12  11−1.7701009E−09  −9.2765556E−10  −4.3637444E−11 −2.0739930E−121.1348684E−12 14 6.2242325E−08 2.1116828E−08 −3.0768516E−09 1.3664841E−10 5.0298887E−13

Example 20

FIG. 22 is a cross-sectional view illustrating the imaging lens inExample 20. Table 20 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 20. FIG.48 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 20.

TABLE 20 Example 20 (A) Si Ri Di Ndj ν dj 1 23.0256 0.8999 1.5891 61.1 23.8670 2.8000 3 −32.1780 3.5000 1.9037 31.3 4 −10.9554 0.2497 *5 17.11511.9999 1.5316 55.5 *6 −25.1569 0.2000 7(St) ∞ 0.7000 *8 −7.7971 0.79991.6335 23.6 *9 −536.5356 0.6000 *10 −106.2558 2.8000 1.5316 55.5 *11−7.4427 0.1072 12 6.1027 3.7500 1.6180 63.3 13 −8.6584 1.0000 *14−5.2196 0.9001 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.84152 Image Surface ∞ (B) L(in Air) 24.18 Bf(in Air) 3.87 f 4.84 f1−8.03 f2 17.05 f3 19.48 f4 −12.50 f5 14.91 f6 6.41 f7 −8.24 f12 −36.50f45 294.94 f123 17.39 f234 22.39 f345 22.75 f2345 11.04 f3456 5.27f12345 19.59 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 6.5537944E−01−9.4982896E−04  7.3370186E−06 −4.6366274E−06  −5.9657920E−08 62.9217835E+00 −1.5825758E−03 −1.3901547E−04 1.1037934E−06  4.1862361E−078 1.2382357E−01  3.0935388E−03 −2.7578617E−04 1.0001355E−05 1.3417770E−06 9 0.0000000E+00  5.8519061E−03  1.9222635E−042.3597332E−06  3.0823379E−07 10 1.0000000E+00  2.5285475E−03 2.4278120E−04 −1.5639100E−05  −6.0549562E−07 11 −1.8065972E−01 −4.8431734E−04 −3.6703756E−05 −2.6861119E−06  −6.1418574E−08 14−3.1659640E+00  −5.6762667E−03 −4.1750028E−06 9.4533459E−07−3.3335258E−07 (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 5 2.6727599E−091.4224882E−09  6.6830954E−10 −4.8396211E−11 −5.0004644E−13 68.9163299E−08 8.2948273E−09 −1.6527371E−09 −7.1114552E−11  9.4350576E−128 9.0285150E−08 −2.2851833E−08  −1.1607085E−09  4.7500986E−10−4.2941805E−11 9 −2.5862029E−08  −8.9584528E−09   1.9730039E−10−2.9940575E−11 −8.2328969E−12 10 −2.3912237E−08  1.0078361E−09−3.9629221E−11  7.7669354E−11 −2.6311013E−12 11 −2.7040367E−09 −9.9165360E−10  −4.5746297E−11 −1.5231667E−12  1.3775269E−12 146.6636441E−08 2.0591925E−08 −2.9933178E−09  7.3823572E−11  4.7819339E−12

Example 21

FIG. 23 is a cross-sectional view illustrating the imaging lens inExample 21. Table 21 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 21. FIG.49 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 21.

TABLE 21 Example 21 (A) Si Ri Di Ndj ν dj 1 23.0107 0.9000 1.5891 61.1 23.8920 2.8000 3 −32.8917 3.4999 1.9037 31.3 4 −11.2358 0.2498 *5 15.23732.2290 1.5316 55.5 *6 −16.4751 0.2000 7(St) ∞ 0.7499 *8 −6.2629 1.00001.6335 23.6 *9 −431.2715 0.6000 *10 −102.6868 3.0000 1.5316 55.5 *11−6.6037 0.1072 12 5.9824 4.0121 1.5891 61.1 13 −8.4581 0.8800 *14−5.1160 0.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.76234 Image Surface ∞ (B) L(in Air) 24.87 Bf(in Air) 3.79 f 4.86 f1−8.09 f2 17.54 f3 15.26 f4 −10.04 f5 13.13 f6 6.63 f7 −8.08 f12 −34.03f45 661.11 f123 12.66 f234 22.74 f345 19.83 f2345 10.78 f3456 5.35f12345 16.26 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 1.2672988E+00−6.7649820E−04 9.6416835E−06 −1.5034334E−06 −3.6148733E−08 61.2186121E+00 −8.0092355E−04 −5.8735782E−05  −1.1678000E−06 4.4627080E−07 8 1.2851151E−02  5.5508345E−03 −3.8122718E−04  7.7695744E−06  1.3694439E−06 9 0.0000000E+00  7.0289821E−031.5128722E−04  3.4177173E−06  3.1171762E−07 10 1.0000000E+00 1.4221628E−03 3.5285424E−04 −1.6804859E−05 −1.3972364E−07 11−3.4068488E−03  −7.3940192E−04 −3.6352714E−05  −1.6672164E−06−3.9149578E−08 14 −2.1678823E+00  −4.4885570E−03 2.2217180E−05−9.1783710E−07 −3.7215715E−07 (C) Surface Numbers RB7 RB8 RB9 RB10 RB115 3.2472497E−09 1.4028342E−09  6.9875212E−10 −5.1173661E−11−2.7739474E−13 6 9.5652273E−08 8.9804507E−09 −1.6412884E−09−7.2878212E−11  9.8847742E−12 8 9.6194622E−08 −2.2187321E−08 −1.0497061E−09  4.7564489E−10 −4.2805580E−11 9 −2.6082829E−08 −8.9759922E−09   2.1451224E−10 −1.8478447E−11 −8.1016139E−12 10−2.4849003E−08  9.6555535E−10 −3.9158072E−11  7.7652402E−11−2.5034022E−12 11 −2.5404292E−09  −9.6970634E−10  −4.5347606E−11−1.6956749E−12  1.3123297E−12 14 5.8933020E−08 1.9727222E−08−2.6977002E−09  5.6360004E−11  4.2317947E−12

Example 22

FIG. 24 is a cross-sectional view illustrating the imaging lens inExample 22. Table 22 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 22. FIG.50 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 22.

TABLE 22 Example 22 (A) Si Ri Di Ndj ν dj 1 23.0056 0.9000 1.5891 61.1 23.8724 2.8000 3 −32.4747 3.4999 1.9037 31.3 4 −13.0377 0.3000 *5 15.27762.0022 1.5316 55.5 *6 −11.8624 0.2000 7(St) ∞ 0.7499 *8 −6.2056 1.00001.6335 23.6 *9 −243.0813 0.6000 *10 −89.4026 2.9956 1.5316 55.5 *11−6.9442 0.1072 12 6.3243 4.1895 1.6180 63.3 13 −8.5495 0.8800 *14−5.1841 0.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.90998 Image Surface ∞ (B) L(in Air) 25.01 Bf(in Air) 3.94 f 4.85 f1−8.04 f2 22.21 f3 12.89 f4 −10.07 f5 13.99 f6 6.59 f7 −8.18 f12 −20.65f45 −236.76 f123 12.19 f234 23.95 f345 18.05 f2345 11.08 f3456 5.42f12345 17.87 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 7.8816625E−01−4.8742310E−04 1.2069361E−05 −3.8428797E−06 −5.5627137E−08 66.2184588E−01 −1.5996449E−04 −8.6173667E−05  −3.1984517E−06 3.9299487E−07 8 −7.4919459E−03   5.5610017E−03 −3.6020997E−04  6.5700553E−06  1.3203187E−06 9 0.0000000E+00  6.6659897E−031.9356970E−04  5.3557531E−06  3.2220795E−07 10 1.0000000E+00 1.4181041E−03 3.5673677E−04 −1.4143995E−05 −2.4534805E−07 11−1.7512133E−01  −7.4840516E−04 −4.4572226E−05  −6.8050491E−07−6.0544058E−08 14 −2.2419138E+00  −4.5725144E−03 2.9966780E−05−1.9093698E−06 −3.2685054E−07 (C) Surface Numbers RB7 RB8 RB9 RB10 RB115 2.4689284E−09 1.4349990E−09  6.9510273E−10 −5.0970771E−11−5.1632835E−13 6 8.8696870E−08 8.3338978E−09 −1.6497260E−09−7.3667181E−11  9.6115209E−12 8 8.8854337E−08 −2.3114873E−08 −1.1611160E−09  4.7095185E−10 −4.2274144E−11 9 −2.5236817E−08 −8.8925179E−09   1.9563284E−10 −3.2854881E−11 −8.2871324E−12 10−2.3729582E−08  1.0148868E−09 −3.8662082E−11  7.7485228E−11−2.6923963E−12 11 −2.8155309E−09  −9.9772403E−10  −4.5553936E−11−1.5100750E−12  1.3733586E−12 14 6.6575677E−08 2.0113809E−08−3.0726220E−09  7.6250629E−11  4.6548611E−12

Example 23

FIG. 25 is a cross-sectional view illustrating the imaging lens inExample 23. Table 23 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 23. FIG.51 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 23.

TABLE 23 Example 23 (A) Si Ri Di Ndj ν dj 1 23.9741 0.9000 1.7725 49.6 24.5328 2.2000 3 68.7766 2.8999 1.9037 31.3 4 −14.8812 0.2497 *5 22.88062.0000 1.5316 55.5 *6 −9.6486 0.2000 7(St) ∞ 0.7498 *8 −7.1168 1.00011.6335 23.6 *9 16.1226 0.6000 *10 80.6488 3.0000 1.5316 55.5 *11 −5.89230.1072 12 5.8806 3.7500 1.6180 63.3 13 −8.8513 0.9025 *14 −4.9121 0.85021.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞ 2.34990 ImageSurface ∞ (B) L(in Air) 22.79 Bf(in Air) 3.38 f 4.87 f1 −7.38 f2 13.76f3 13.05 f4 −7.67 f5 10.46 f6 6.33 f7 −7.75 f12 −33.57 f45 1059.55 f12311.76 f234 18.96 f345 17.71 f2345 9.70 f3456 4.95 f12345 15.87 (C)Surface Numbers K RB3 RB4 RB5 RB6 5 1.0000000E+00 1.3421626E−04−8.0860083E−04   1.3499613E−03 −2.7415173E−04  6 1.0000000E+003.3134245E−03 4.6827087E−03  6.5996414E−04 −2.7402194E−04  81.0000000E+00 1.0800831E−02 1.0393327E−02 −2.6599076E−03 1.2000222E−04 91.0000000E+00 2.0123379E−02 −5.1529673E−03   3.4352523E−03−4.2668625E−04  10 1.0000000E+00 5.1623525E−03 1.6503112E−03−4.0778610E−03 1.4843180E−03 11 1.0000000E+00 −5.1947139E−03 4.2061642E−03 −2.0339947E−03 6.7475444E−04 14 −2.1798927E+00 −2.2058279E−03  −2.6804717E−03  −1.3195433E−03 3.5054433E−04 (C) SurfaceNumbers RB7 RB8 RB9 RB10 RB11 5 1.2332607E−06  7.3377169E−060.0000000E+00 0.0000000E+00 0.0000000E+00 6 5.7525391E−05 −2.1410289E−050.0000000E+00 0.0000000E+00 0.0000000E+00 8 −8.9992234E−05 −1.5226181E−05 1.9045593E−06 0.0000000E+00 0.0000000E+00 9−2.4318213E−05  −1.0019977E−05 0.0000000E+00 0.0000000E+00 0.0000000E+0010 1.0208083E−03 −4.5662131E−04 −7.6888809E−05  6.3289655E−05−8.4938625E−06  11 −4.6555276E−04   1.4330343E−04 4.7558816E−05−3.4332260E−05  4.9954130E−06 14 0.0000000E+00  0.0000000E+000.0000000E+00 0.0000000E+00 0.0000000E+00

Example 24

FIG. 26 is a cross-sectional view illustrating the imaging lens inExample 24. Table 24 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 24. FIG.52 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 24.

TABLE 24 Example 24 (A) Si Ri Di Ndj ν dj 1 23.1852 0.9000 1.7725 49.6 25.2118 2.2000 3 181.7894 3.3001 1.9037 31.3 4 −13.3226 0.2497 *5 19.17143.5893 1.5316 55.5 *6 −28.7537 0.2000 7(St) ∞ 0.6999 *8 −7.2635 0.80001.6335 23.6 *9 17.2580 0.6000 *10 272.1485 2.8007 1.5316 55.5 *11−4.7814 0.1072 12 5.9164 3.7500 1.6180 63.3 13 −9.0440 0.8800 *14−4.8863 0.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.12778 Image Surface ∞ (B) L(in Air) 24.08 Bf(in Air) 3.16 f 4.82 f1−8.90 f2 13.85 f3 22.22 f4 −7.97 f5 8.87 f6 6.40 f7 −7.71 f12 −96.82 f4538.38 f123 18.55 f234 28.81 f345 18.44 f2345 10.61 f3456 4.72 f1234514.10 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 1.0000000E+002.0231930E−03 −2.1532615E−03  1.3362853E−03 −2.3983309E−04 61.0000000E+00 9.0151806E−04  2.2648824E−03 −6.2436147E−04 −1.5955139E−048 1.0000000E+00 −2.2816842E−03   1.5196477E−03 −1.4255095E−03−4.7290709E−04 9 1.0000000E+00 3.4645355E−03 −5.6610633E−03 2.2130224E−03 −9.4394187E−05 10 1.0000000E+00 8.2963625E−05 3.5717666E−03 −3.3650791E−03  9.2529210E−04 11 1.0000000E+00−4.2897828E−04  −1.9406923E−03  2.2374942E−03 −1.5260704E−04 14−3.7420961E+00  −3.1161439E−03  −2.9637540E−03 −8.9822457E−04 2.5896394E−04 (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 5−1.2269021E−05  7.9043439E−06 0.0000000E+00 0.0000000E+00 0.0000000E+006 1.6731799E−04 −6.7753242E−05  0.0000000E+00 0.0000000E+000.0000000E+00 8 −2.5383382E−04  2.5844351E−04 −6.7334214E−05 0.0000000E+00 0.0000000E+00 9 2.9922472E−05 −2.1118330E−05 0.0000000E+00 0.0000000E+00 0.0000000E+00 10 9.5691356E−04−3.7697523E−04  −5.9241320E−05  4.1942641E−05 −4.7624463E−06  11−6.0961067E−04  1.8824154E−04 5.9566907E−05 −3.5757891E−05 4.6000623E−06 14 0.0000000E+00 0.0000000E+00 0.0000000E+00 0.0000000E+000.0000000E+00

Example 25

FIG. 27 is a cross-sectional view illustrating the imaging lens inExample 25. Table 25 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 25. FIG.53 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 25.

TABLE 25 Example 25 (A) Si Ri Di Ndj ν dj 1 23.8595 0.9000 1.7725 49.6 24.5611 2.2000 3 −543.6043 3.3000 1.9037 31.3 4 −11.0351 0.3000 *523.3135 3.4500 1.5316 55.5 *6 −11.0641 0.2000 7(St) ∞ 0.7498 *8 −8.26070.8000 1.6335 23.6 *9 13.9037 0.6000 *10 201.4070 3.0000 1.5316 55.5 *11−5.7446 0.1072 12 5.8682 3.5000 1.6180 63.3 13 −13.9555 1.1892 *14−5.6218 0.8502 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞1.93081 Image Surface ∞ (B) L(in Air) 24.11 Bf(in Air) 2.96 f 4.89 f1−7.45 f2 12.43 f3 14.62 f4 −8.07 f5 10.56 f6 7.17 f7 −8.87 f12 −81.59f45 263.00 f123 10.76 f234 15.27 f345 18.71 f2345 9.62 f3456 5.43 f1234513.64 (C) Surface Numbers K RB3 RB4 RB5 RB6 5 1.0000000E+00−2.7516011E−04 −7.5689107E−04 7.3787891E−05 −1.6934826E−05 61.0000000E+00 −9.5424232E−04  7.8559480E−04 −4.0253783E−04 −6.8603869E−05 8 1.0000000E+00 −5.7534493E−05  3.6061283E−03−8.4561334E−04  −4.1124628E−05 9 1.0000000E+00  5.1068479E−04 7.8521547E−05 7.2023583E−04  1.2133876E−05 10 1.0000000E+00 2.0387372E−03 −4.9927201E−03 2.4212999E−03 −9.4764774E−04 111.0000000E+00  4.5682005E−03 −8.6473971E−03 5.6616035E−03 −9.1251068E−0414 −1.3117516E+00  −3.4185577E−04 −2.0424027E−03 −5.7604622E−04  1.7293141E−04 (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 5−7.3632864E−06 2.4171049E−06 0.0000000E+00 0.0000000E+00 0.0000000E+00 6−1.7203147E−05 8.0424156E−06 0.0000000E+00 0.0000000E+00 0.0000000E+00 8−4.5785791E−05 −2.7378302E−05  8.2777428E−06 0.0000000E+00 0.0000000E+009  4.0251759E−05 −5.2569674E−06  0.0000000E+00 0.0000000E+000.0000000E+00 10  5.9440378E−04 −1.3772400E−04  1.4818485E−05−1.0312603E−06  −7.6678314E−09  11 −6.9092561E−04 2.3036896E−046.4552659E−05 −3.8686524E−05  4.7752614E−06 14  0.0000000E+000.0000000E+00 0.0000000E+00 0.0000000E+00 0.0000000E+00

Example 26

FIG. 28 is a cross-sectional view illustrating the imaging lens inExample 26. Table 26 represents basic lens data, various data, andaspherical surface data regarding the imaging lens of Example 26. FIG.54 illustrates, in order from the left of the drawing sheet, sphericalaberration diagram, astigmatism diagram, distortion diagram, and lateralchromatic aberration diagram of the imaging lens in Example 26.

TABLE 26 Example 26 (A) Si Ri Di Ndj ν dj 1 22.2011 0.8999 1.7725 49.6 23.7614 2.2000 3 76.6236 2.6999 1.6335 23.6 4 −11.0731 0.2496 *5 93.36973.4500 1.6180 63.3 *6 −6.3190 0.2000 7(St) ∞ 0.6999 *8 −10.1124 0.79991.6335 23.6 *9 12.9038 0.6000 *10 418.1059 2.8000 1.5316 55.5 *11−7.2393 0.1072 12 8.6938 3.5000 1.6180 63.3 13 −7.8671 1.6257 *14−5.9408 0.9000 1.6335 23.6 15 ∞ 0.70000 16 ∞ 0.50000 1.5168 64.2 17 ∞2.59435 Image Surface ∞ (B) L(in Air) 24.36 Bf(in Air) 3.62 f 4.82 f1−5.99 f2 15.46 f3 9.71 f4 −8.83 f5 13.42 f6 7.27 f7 −9.38 f12 −15.66 f45−61.87 f123 8.57 f234 12.90 f345 14.61 f2345 9.05 f3456 5.76 f1234514.82 (C) Surface Numbers K RB3 RB4 RB5 RB6 3 1.0000000E+001.7240670E−03 −1.8333422E−03 1.0168832E−03 −5.8714861E−04 41.0000000E+00 0.0000000E+00  0.0000000E+00 0.0000000E+00  1.1062816E−058 1.0000000E+00 −3.9861040E−04  −2.9364141E−04 1.4851086E−05−1.3068575E−06 9 1.0000000E+00 −3.2147003E−04   2.1726126E−031.0991659E−04  2.2344260E−06 10 1.0000000E+00 5.9810268E−04 1.9865816E−03 1.2175450E−04 −6.9877934E−04 11 1.0000000E+005.6394544E−03 −9.5555378E−03 6.7039925E−03 −1.1855985E−03 141.8982456E+00 −8.0448334E−04  −2.7316577E−04 −3.7884339E−05 −8.6555359E−06 (C) Surface Numbers RB7 RB8 RB9 RB10 RB11 3 9.3368600E−059.6871018E−05 −4.7771197E−05  6.3117231E−06 0.0000000E+00 40.0000000E+00 0.0000000E+00 0.0000000E+00 0.0000000E+00 4.0317170E−10 8−3.0195902E−07  −3.5528608E−08  −7.5508159E−09  0.0000000E+000.0000000E+00 9 −2.0558805E−08  −6.1528960E−09  0.0000000E+000.0000000E+00 0.0000000E+00 10 5.8428774E−04 −1.9254765E−04 1.1038882E−05 4.3923983E−06 −4.9879320E−07  11 −7.3320646E−04 2.4418315E−04 6.7295012E−05 −3.8740563E−05  4.5572923E−06 140.0000000E+00 0.0000000E+00 0.0000000E+00 0.0000000E+00 0.0000000E+00

Regarding the imaging lenses of Examples 1 through 12 among the Examples1 through 26 above, the materials for all of the lenses are glass. InExamples 13 through 25, a first lens L1, a second lens L2, and a sixthlens L6 are glass, and a third lens L3, a fourth lens L4, a fifth lensL5, and a seventh lens L7 are plastic. In Example 26, a first lens L1, athird lens L3, and a sixth lens L6 are glass, and a second lens L2, afourth lens L4, a fifth lens L5, and a seventh lens L7 are plastic.

Tables 27 and 28 represent the values corresponding to conditionalformulae (1) through (23) of the imaging lenses, which are summarizedfor each of the Examples 1 through 26. The values represented in Tables27 and 28 are with respect to the d line.

TABLE 27 Conditional Fomulae (5) (8) (9) (11) (12) (1) (2) (3) (4) (R3 +R4)/ (6) (7) (R14 + R15)/ (R5 + R6)/ (10) (R10 + R11)/ (R12 + R13)/Examples f12/f vd7 vd3 D4/f (R3 − R4) f345/f f1/f2 (R14 − R15) (R5 − R6)f5/f (R10 − R11) (R12 − R13) 1 −7.08 30.13 63.33 0.05 0.99 3.08 −0.52−1.00 0.69 1.91 1.10 0.05 2 −8.67 26.3 63.3 0.05 0.96 3.95 −0.53 −1.690.64 2.09 1.16 0.02 3 −6.43 26.3 63.3 0.06 0.68 2.56 −0.51 −0.56 0.671.80 1.03 −0.03 4 −9.90 38.03 63.33 0.05 1.35 3.50 −0.55 −1.00 0.63 1.901.19 0.00 5 −9.21 34.54 63.33 0.05 1.16 3.21 −0.56 −1.00 0.66 1.82 1.110.00 6 −3.88 32.10 63.33 0.05 1.09 2.75 −0.45 −1.00 0.31 2.38 2.12 0.037 −3.85 26.29 63.33 0.06 0.62 2.68 −0.45 −1.00 0.66 1.76 0.94 −0.05 8−3.33 41.41 63.33 0.06 0.49 2.19 −0.44 −1.00 0.43 2.12 0.84 −0.56 9−8.87 26.29 63.33 0.05 0.19 2.82 −0.63 −1.00 −0.25 1.61 1.25 −0.19 10−3.89 26.29 63.33 0.05 0.66 2.20 −0.48 −1.00 −0.41 1.31 1.00 −0.53 11−3.30 17.47 63.33 0.05 −0.44 2.19 −0.49 −1.00 −0.60 1.64 1.15 −0.32 12−5.48 17.47 63.33 0.06 −0.87 2.00 −0.64 −0.72 0.19 1.38 1.00 −0.56 13−25.61 23.62 55.48 0.06 3.30 5.49 −0.55 −1.00 −0.37 2.02 0.30 −0.26 14−21.56 23.62 55.48 0.06 3.57 5.01 −0.53 −1.00 −0.27 2.10 0.24 −0.25 15−21.76 23.62 55.48 0.06 3.13 6.40 −0.54 −1.00 0.14 2.50 0.42 −0.20 1613.07 23.62 55.48 0.06 3.49 4.68 −0.66 −1.00 0.24 1.77 0.07 −0.13 17−7.28 23.62 55.48 0.06 3.79 3.88 −0.44 −1.00 0.19 3.30 1.06 −0.10 18−5.41 23.62 55.48 0.06 2.16 3.81 −0.42 −1.00 −0.18 2.87 1.17 −0.19 19−4.76 23.62 55.48 0.06 2.29 4.55 −0.39 −1.00 −0.30 3.30 1.21 −0.21 20−7.54 23.62 55.48 0.05 2.03 4.70 −0.47 −1.00 −0.19 3.08 1.15 −0.17 21−7.01 23.62 55.48 0.05 2.04 4.08 −0.46 −1.00 −0.04 2.70 1.14 −0.17 22−4.26 23.62 55.48 0.06 2.34 3.72 −0.36 −1.00 0.13 2.89 1.17 −0.15 23−6.89 23.62 55.48 0.05 0.64 3.64 −0.54 −1.00 0.41 2.15 0.86 −0.20 24−20.10 23.62 55.48 0.05 0.86 3.83 −0.64 −1.00 −0.20 1.84 0.97 −0.21 25−16.69 23.62 55.48 0.06 1.04 3.83 −0.60 −1.00 0.36 2.16 0.94 −0.41 26−3.25 23.62 63.33 0.05 0.75 3.03 −0.39 −1.00 0.87 2.78 0.97 0.05

TABLE 28 Conditional Formulae (22) (13) (14) (15) (16) (17) (18) (19)(20) (21) (R8 + R9)/ (23) Examples vd5 f3/f f2/f f1/f f123/f f234/ff12345/f f2345/f f3456/f (R8 − R9) f/f45 1 53.2 1.89 2.55 −1.32 1.382.82 2.34 1.81 1.06 −0.26 −0.06 2 53.2 1.83 2.14 −1.13 1.24 2.24 2.981.73 1.11 −0.04 −0.18 3 53.2 2.08 2.82 −1.44 1.63 2.93 1.92 1.80 1.00−0.13 0.07 4 40.9 1.97 2.44 −1.36 1.41 2.92 2.63 1.82 1.08 −0.01 −0.10 540.9 1.94 2.41 −1.34 1.42 2.83 2.42 1.79 1.07 −0.18 −0.06 6 40.9 1.482.56 −1.16 1.16 1.65 2.54 1.61 1.15 0.35 −0.18 7 53.2 1.75 3.14 −1.411.59 3.39 2.54 1.86 1.01 −0.40 −0.04 8 40.9 1.33 2.46 −1.09 1.07 1.522.05 1.37 1.21 0.68 −0.20 9 31.3 1.86 1.92 −1.21 1.55 1.74 2.43 1.411.02 0.14 −0.06 10 31.3 1.30 2.82 −1.34 1.20 2.25 2.17 1.46 1.15 −0.14−0.10 11 31.3 2.28 2.54 −1.24 3.39 2.09 2.39 1.48 0.99 0.81 0.16 12 29.81.57 1.96 −1.26 1.58 2.04 1.93 1.37 0.95 0.01 0.07 13 55.5 2.45 3.16−1.74 1.54 7.13 3.66 2.16 1.31 −0.31 −0.17 14 55.5 2.37 3.17 −1.68 1.475.71 3.28 2.05 1.35 −0.15 −0.17 15 55.5 2.29 2.96 −1.59 1.41 4.32 4.382.16 1.41 −0.10 −0.24 16 55.5 2.58 2.55 −1.69 1.35 6.30 2.33 1.86 1.38−0.21 −0.10 17 55.5 2.88 3.86 −1.71 2.19 3.67 3.00 2.13 1.17 −1.85 −0.0118 55.5 3.15 3.99 −1.66 2.92 4.38 3.40 2.19 1.09 −0.98 0.02 19 55.5 3.724.21 −1.64 4.16 4.89 4.95 2.43 1.13 −1.07 0.01 20 55.5 4.02 3.52 −1.663.59 4.62 4.05 2.28 1.09 −1.03 0.02 21 55.5 3.14 3.61 −1.67 2.61 4.683.35 2.22 1.10 −1.03 0.01 22 55.5 2.66 4.58 −1.66 2.52 4.94 3.69 2.291.12 −1.05 −0.02 23 55.5 2.68 2.83 −1.52 2.42 3.89 3.26 1.99 1.02 −0.390.00 24 55.5 4.61 2.88 −1.85 3.85 5.98 2.93 2.20 0.98 −0.41 0.13 25 55.52.99 2.54 −1.52 2.20 3.12 2.79 1.97 1.11 −0.25 0.02 26 55.5 2.01 3.21−1.24 1.78 2.68 3.07 1.88 1.19 −0.12 −0.08

As can be found from the data described above, each of the imaginglenses of Examples 1 through 26 is constituted by seven lenses and canbe produced in a small size. The respective imaging lenses further havesmall F numbers from 1.5 to 1.6 and correct the respective aberrationfavorably, having high optical performance. These imaging lenses can besuitably used for surveillance cameras, vehicle mounted cameras forphotographing images in the front, side, and back of an automobile, andthe like.

[Embodiment of the Imaging Apparatus]

FIG. 55 shows the aspect of an automobile 100 on which the imagingapparatus provided with the imaging lens of the present embodiment ismounted, as a usage example. In FIG. 55, the automobile 100 is providedwith an outside-vehicle camera 101 for photographing a blind angle rangeon the side surface of the passenger's side thereof, an outside-vehiclecamera 102 for photographing a blind angle range behind the automobile100, and an in-vehicle camera 103, which is provided on the back of aroom mirror, for photographing the same visual field range as thedriver's. The outside-vehicle cameras 101, 102, and the in-vehiclecamera 103 correspond to the imaging apparatus according to theembodiment of the present disclosure, and are provided with the imaginglens according to the present embodiment of the present disclosure andan imaging element which converts an optical image formed by the imaginglens into an electric signal.

All the imaging lenses according to the Examples of the presentdisclosure have the advantageous points described above. Accordingly,the outside-vehicle cameras 101, 102, and the in-vehicle camera 103 canalso be configured in a small size and at low costs, have wider anglesof view, and enables fine images to be obtained even in the peripheralportions of the imaging area.

The present disclosure has been described with reference to theEmbodiments and Examples. The present disclosure is not limited to theembodiments and the examples described above, and various modificationsare possible. For example, values, such as the radius of curvature, thedistances between surfaces, the refractive indices, the Abbe numbers ofeach lens element, and the like are not limited to the values in thenumerical examples shown in the Tables, but may be other values.

Note that all of the lenses of the Examples above are constituted byhomogeneous materials. However, gradient index lenses may be used as thelenses. Further, in some of the Examples above, the second lens L2through the seventh lens L7 are constituted by diffractive lenses inwhich surfaces are made aspherical. A diffractive optical element may beformed in one surface or a plurality of surfaces.

The embodiment of the imaging apparatus was described with reference tothe Figure of an example, in which the present disclosure is applied toa vehicle mounted camera. The present disclosure is not limited to thisapplication and can be applied to portable terminal cameras,surveillance cameras, and the like, for example.

What is claimed is:
 1. An imaging lens consisting of, in order from theobject side, a first lens having a negative power, a second lens havinga positive power, a third lens having a positive power, a fourth lenshaving a negative power, a fifth lens having a positive power, a sixthlens having a positive power, and a seventh lens having a negativepower, wherein the following conditional formulae are satisfied:f12/f<−3.2  (1)νd7<55  (2)40<νd3  (3) where, f12 is the combined focal length of the first lensand the second lens, f is the focal length of the entire system, νd7 isthe Abbe's number of the material for the seventh lens with respect tothe d line, and νd3 is the Abbe's number of the material for the thirdlens with respect to the d line.
 2. An imaging lens consisting of, inorder from the object side, a first lens having a negative power, asecond lens having a positive power, a third lens having a positivepower, a fourth lens having a negative power, a fifth lens having apositive power, a sixth lens having a positive power, and a seventh lenshaving a negative power, wherein the following conditional formulae aresatisfied:f12/f<−3.2  (1)D4/f<0.39  (4) where, f12 is the combined focal length of the first lensand the second lens, f is the focal length of the entire system, and D4is the air space between the second lens and the third lens.
 3. Animaging lens consisting of, in order from the object side, a first lenshaving a negative power, a second lens having a positive power, a thirdlens having a positive power, a fourth lens having a negative power, afifth lens having a positive power, a sixth lens having a positivepower, and a seventh lens having a negative power, wherein the followingconditional formulae are satisfied:νd7<55  (2)−0.93<(R3+R4)/(R3−R4)  (5) where, νd7 is the Abbe's number of thematerial for the seventh lens with respect to the d line, R3 is theradius of curvature of the object-side surface of the second lens, andR4 is the radius of curvature of the image-side surface of the secondlens.
 4. The imaging lens as defined in claim 2, wherein the followingconditional formula is further satisfied:40<νd3  (3) where, νd3 is the Abbe's number of the material for thethird lens with respect to the d line.
 5. The imaging lens as defined inclaim 1, wherein the following conditional formula is further satisfied:25<νd5  (13) where, νd5 is the Abbe's number of the material for thefifth lens with respect to the d line.
 6. The imaging lens as defined inclaim 1, wherein the following conditional formula is further satisfied:0.5<f3/f<10  (14) where, f3 is the focal length of the third lens, and fis the focal length of the entire system.
 7. The imaging lens as definedin claim 1, wherein the following conditional formula is furthersatisfied:0.5<f2/f<7  (15) where, f2 is the focal length of the second lens, and fis the focal length of the entire system.
 8. The imaging lens as definedin claim 1, wherein the following conditional formula is satisfied:f1/f<−0.25  (16) where, f1 is the focal length of the first lens, and fis the focal length of the entire system.
 9. The imaging lens as definedin claim 1, wherein the following conditional formula is satisfied:0.3<f123/f<15  (17) where, f123 is the combined focal length of thefirst lens, the second lens, and the third lens, and f is the focallength of the entire system.
 10. The imaging lens as defined in claim 1,wherein the following conditional formula is further satisfied:0.5<f234/f<18  (18) where, f234 is the combined focal length of thesecond lens, the third lens, and the fourth lens, and f is the focallength of the entire system.
 11. The imaging lens as defined in claim 1,wherein the following conditional formula is further satisfied:0.5<f12345/f<10  (19) where, f12345 is the combined focal length of thefirst lens, the second lens, the third lens, the fourth lens, and thefifth lens, and f is the focal length of the entire system.
 12. Theimaging lens as defined in claim 1, wherein the following conditionalformula is further satisfied:−5.0<(R14+R15)/(R14−R15)<−0.01  (8) where, R14 is the radius ofcurvature of the object-side surface of the seventh lens, and R15 is theradius of curvature of the image-side surface of the seventh lens. 13.The imaging lens as defined in claim 1, wherein the followingconditional formula is further satisfied:0.4<f2345/f<10  (20) where, f2345 is the combined focal length of thesecond lens, the third lens, the fourth lens, and the fifth lens, and fis the focal length of the entire system.
 14. The imaging lens asdefined in claim 1, wherein the following conditional formula is furthersatisfied:0.1<f3456/f<5.0  (21) where, f3456 is the combined focal length of thethird lens, the fourth lens, the fifth lens, and the sixth lens, and fis the focal length of the entire system.
 15. The imaging lens asdefined in claim 1, wherein the following conditional formula is furthersatisfied:−4.0<(R8+R9)/(R8−R9)<4.0  (22) where, R8 is the radius of curvature ofthe object-side surface of the fourth lens, and R9 is the radius ofcurvature of the image-side surface of the fourth lens.
 16. The imaginglens as defined in claim 1, wherein the following conditional formula isfurther satisfied:−3<f/f45<3  (23) where, f45 is the combined focal length of the fourthlens and the fifth lens, and f is the focal length of the entire system.17. An imaging apparatus equipped with the imaging lens as defined inclaim
 1. 18. An imaging apparatus equipped with the imaging lens asdefined in claim
 2. 19. An imaging apparatus equipped with the imaginglens as defined in claim 3.